Fix #413 - Allow custom CSS classes in menu items, walker cleanup
Fix #413 - Allow custom CSS classes in menu items, walker cleanup

simulacrum-amsterdam/simulacrum-sage,tylertravitz/atlas,davado/sage,mattrothenberg/abxy,mikaelmattsson/sage,gabzon/voxmusica,eggandpig/ihateblonde,decapyre/sage,trevoristall/quillflow,gabzon/clochette,dguardia/testsage,hypothesis/wordpress-theme-hypothesis,fingerpaintmarketing/sage,gkmurray/sage,apexskier/nodm-wp-theme,ucarmetin/reen,rniswonger/sage,renddrew/sage_cstm,wolfgangcode/wrangel,spokencode/My-Roots-Starter-Theme,ivgalic/galibugs-theme,Tmeister/vallein,ezl/roots.io,nickdotreid/nickreidcom-2015,barrychampion/hgplantsales,MikeiLL/New_Cool_Theme,davado/sage,obelis/faith-motorsports-theme,nimi/nlm-theme,troymcginnis/Gromf-Fork,austinpray/sage,zacwasielewski/inlet-wedding,kellygrape/pfca,nicholaslmitchell/nlm-theme,maintainweb/morrisons-jewelry,Luandro-com/Amor,BurfieldCreative/sage,troymcginnis/Gromf-Fork,chmaltsp/My-Choice-Theme,LibLogic/DSS,maintainweb/jamacor,generoi/sage,WenderHost/pmd-sage-theme,DoersGuild/wp-roots-woocommerce,noplanman/sage-wpcs,obelis/premium-real-estate-theme,jhotovy/refined,bigwilliam/roots-reloaded,MikeiLL/mZoo-wp-theme,mckelvey/sage,gabzon/dancefloor,dstockdale/pps_roots,achoukah/trevors_head,digitalmediaproduction/oncology-roots,tracyapps/web2,DesignPond/praticien_theme,jloosli/shoestrap-3,cyeph/demo,nomad-mystic/nomadmystic,renddrew/sage_cstm,Decisionary/blr-base-theme,tttanaka/sage,mikifus/sage,PCHC/ccpm,scottrblock/roots-aie,DelftscheStudentenBond/dsb-template,Ninir/roots,gianthat/sage,AmosFord/fordsage,simulacrum-amsterdam/simulacrum-sage,m6r/wp-themev2,aaronkelch/sage,gabzon/experiensa,HYPD/sagetest,gabzon/sevinci-sage-2,gabzon/spoutnik,elenago/fik-vinila,schikulski/Gromf,jlmaners/pbc-media,UWAA/dawgdash2014,eggandpig/shellandclove,AnthonyTurrigiano/sage,Internetmonkey/paradisegardens,wmurphy/fik-vinila,rniswonger/sage,johnsolarz/modular,nickdotreid/nickreidcom-2015,nickdotreid/healthdesignbyus-wordpress-theme,muhamadsyahril/themes-sage-master,ColinWaddell/roots-cwdc,gabzon/personal-webapp,MikeiLL/black_sage_theme,dmassiani/loots,leoken/leoken,zNiik/jsour,gabzon/experiensa-website,mikeinthesis/jackalope,collapsedwave/stratacore-roots,electronspin/sage-f6,bfillmer/roots,DocWatson/roots,bigwilliam/roots-reloaded,Maximoo/sage,razordaze/cutter,commandante567/bugs,matchboxdesigngroup/mdg-base-2014,sengeezer/sassy-roots,Zaturrby/simulacrum-sage,mckelvey/sage,Soutar/ward,mupi/atlasmedialab,hermanbanken/wp-theme-excelsior,ryanschilling/roots-dummy,hypothesis/wordpress-theme-hypothesis,moetw/blog,blackjak231/ag4l_roots,tbbooher/cffc2,PCHC/PCHC2016,leoj3n/roots,gabzon/sevinci-sage-2,ClimateFeedback/wordpress-theme,skemantix/sage,tracyapps/sss,entr/sage,mubassirhayat/roots,fikinitiative/pith,JulienMelissas/sage,m6r/wp-themev2,ericimthorn/sage,Cleifai/tema_wp_roots,fikinitiative/fodd,MikeiLL/bludog,ddanh85/dpsage,mAAdhaTTah/gromf,code4sac/brigade-theme,maintainweb/maintain.la,sengeezer/sassy-roots,tttanaka/sage,Decisionary/blr-base-theme,dstockdale/pps_roots,antzucaro/roots,wprtl/sage-rtl,ramjack/wp-theme-landing-page,ryanschilling/synergy,jfmacdonald/parsley,leoken/codathedog,islamx/mine,tylertravitz/atlas,daaveuk/glasseye,cadr-sa/shoestrap-3,Internetmonkey/d1,palpalani/sage,sacredwebsite/sage,drewwestphal/connect-theme,valenciafg/guanaima-theme,miukimiu/sage-meninasgeeks,Maximoo/sage,rku4er/nielsendesign-wp,maintainweb/ramprateinfo,DelftscheStudentenBond/dsb-template,ChrisLTD/sage,smutek/BourbonySages-Rex,maintainweb/maintain.la,git-e-up/saucy-theme,eggandpig/ihateblonde,c50/c50_roots,JesusisFreedom/sage,firebelly/fb-sage,sinnwerkstatt/sinn-sage,Luandro-com/Amor,willenglishiv/funnelactive-apply,nomad-mystic/nomadmystic,NicBeltramelli/sage,Bridgton-Academy/ba-roots,DocWatson/roots,kalenjohnson/sage,girl-elvis/gamesage,jchck/jaechicks-site,adrianstaniloiu/sage,thenewblk/mahamusicfestival,eatrero/atrero2015,c50/c50_roots,puterakahfi/sage,kevinlisota/roots,heedfull/ClionaJoyce,leoj3n/roots,glocalcoop/anp-network-main-redux,gabzon/sevinci-agency,theGuruWithin/neo,BiotechFeedback/wordpress-theme,bigwilliam/sage-extended,MikeiLL/mZoo-wp-theme,Decisionary/blr-base-theme,barnyp/sage,ezl/roots.io,Kilbourne/melarido,obelis/faith-motorsports-theme,aspsomerville/roots-SR,psteinweber/Kanso-Theme,sciserver/gluseen_wp_theme,psorensen/TBC-Theme,Tmeister/wp-roots-base-theme,jloosli/shoestrap-3,westhechiang/nsk,01walid/roots,Iamronan/sage,themagicalboy/iddo,iboss-ptk/cuse_theme,scottrblock/roots-aie,wmurphy/fik-vinila,wesm87/sage,hermanbanken/wp-theme-excelsior,templesmc/tuupdate,johnsolarz/sage,jfmacdonald/parsley,gabzon/experiensa,glocalcoop/anp-network-main-redux,adelcasse/delcasse_fr,elenago/fik-vinila,megryll/davielaw,InPulseDigital/marymar,tormjens/anunablade,teaguecnelson/tn-tellis-bds,robbintt/sage,memuller/benedict_theme-old,jeffsee55/sage-runfurman,idies/escience-2016-wp-theme,PCHC/hopehouse,matchboxdesigngroup/mdg-base,thewellmetgroup/theme,romapad/sound-themplate,teaguecnelson/tn-tellis-bds,jeffsee55/mdl-sage,MiquelAdell/blueprint,Tmeister/wp-roots-base-theme,jcummings/MarshallU-Wordpress-Roots-Theme,tracyapps/ruth,bfillmer/roots,tracyapps/web2,filippoferri/sep292015,kalenjohnson/sage,kab2512/sage,grex22/bookflipper,tracyapps/ruth,gabzon/sevinci-sage,commandante567/bugs,mohitkr05/socialy,PCHC/pchc-board,aitormendez/506,Soutar/ward,ryanschilling/synergy,tombaro/linje19-theme,BiotechFeedback/wordpress-theme,evanfuture/thyme,LibLogic/DSS,maintainweb/milesmarketeer,NicBeltramelli/sage,chaddanna/jenna-portfolio,mikifus/sage,maintainweb/passione-pizza,rovak73/sage,gabzon/spoutnik,matchboxdesigngroup/mdg-base-2014,decapyre/sage,bezbeli/cisteliste,topecz/roots,agusgarcia/sage9,ThemeSurgeon/sage,agusgarcia/sage9,themagicalboy/iddo,jeremystrom/sage,ChrisLTD/sage,nonstndrd/nonstndrd,Dedato/dedato,digitalmediaproduction/oncology-roots,mikeinthesis/jackalope,sacredwebsite/sage,gausie/jewdas.org,boskakke/sage-bt,blinkpi/biper,jeffsee55/mdl-sage,gopperman/fader-theme,MikeiLL/New_Cool_Theme,antzucaro/roots,tracyapps/web2,maintainweb/ramprate,Ninir/roots,eggandpig/shellandclove,IQ2022/sage,gabzon/sevinci-sage-2,webrain/yellowtree,sengeezer/sassy-roots,megryll/davielaw,agusgarcia/sage9,maintainweb/jamacor,dsa821/mgoblog,christopherbruce/christopher-sage,nicholaslmitchell/nlm-theme,sciserver/SciServer-WordPress-Theme,rovak73/sage,JohnBueno/jw,ClimateFeedback/wordpress-theme,danpliego/sage,sdphp/sdphp.org-WP-theme,collapsedwave/stratacore-roots,jloosli/shoestrap-3,electronspin/hadron,nomad-mystic/nomadmystic,arikan/yereldemok,cmkshaw/colin-smith,jamessonbros/smokymtn-theme,tmingos/sassy-roots,diZturbio/CM-roots,johnsolarz/sage-modular,bostondv/roots,johnsolarz/sage,gkealy/tfmhsite,nsrosenqvist/sage,eggandpig/shellandclove,evanfuture/thyme,zacwasielewski/sage-customized,Tmeister/vallein,LechDutkiewicz/dinksy,oxxido/bizop,chmaltsp/My-Choice-Theme,MikeiLL/MaterialSage,willenglishiv/funnelactive-apply,mattrothenberg/abxy,westhechiang/nsk,markthethomas/grand-adventure,fabiowitt/sage,eversoclever/medium,kellygrape/mazeppa-roots,masoninthesis/seaside-new,zNiik/jsour,haruair/haruair,maintainweb/passione-pizza,grex22/bookflipper,bezbeli/cisteliste,ptrckvzn/sage,jdcauley/roots-with-foundation,tmingos/sassy-roots,templesmc/tuupdate,MManifesto/sage,c50/c50_roots,openstate/tcampeu-theme,PaidSites/sage,jhotovy/refined,MikeiLL/MaterialSage,wajatimur/gtable-wptheme,ucarmetin/reen,maintainweb/thelarman,IPMM/ipaintmymind,fusionpig/sage,gianthat/sage,bkahlert/sage-base,kevinreilly/wordpress,code4sac/brigade-theme,mernor/teszt_roots,gkealy/tfmhsite,viettruong2194/quochoc55-58,adelcasse/gaucheunie-wordpress-theme,wesm87/sage,dmassiani/loots,mernor/teszt_roots,megryll/davielaw,ChrisLTD/sage,sciserver/SciServer-WordPress-Theme,kevinlisota/roots,t0t/annafont,smutek/BourbonySage,git-e-up/saucy-theme,vonkanehoffen/sage,vonkanehoffen/fieldarm,girl-elvis/gamesage,bobderrico80/nymb-v2,ddanh85/dpsage,CFERepo/cfe,fikinitiative/fodd,JulienMelissas/sage,gelli/stonyray,nbranzburg/iconsult,windeck/theme,blinkpi/biper,nomad-mystic/nomadmystic,smhmic/roots,MikeiLL/MaterialSage,bobderrico80/sage,davidbunce/david-bunce-2015,razordaze/cutter,IPMM/ipaintmymind,jlmaners/pbc-media,roots/sage,noplanman/sage-wpcs,markthethomas/grand-adventure,sengeezer/sassy-roots,openstate/tcampeu-theme,dsa821/phyllissadesign,MikeiLL/pure-demo,jcummings/MarshallU-Wordpress-Roots-Theme,johnsolarz/sage-modular,PCHC/pchc-board,dsa821/phyllissadesign,mohitkr05/socialy,Comunitas/JuntosWPTheme,trevoristall/quillflow,Anunatak/anunastart,fingli/sage,jchck/jaechicks-site,brainmangv/sage,rku4er/rks-wp,PCHC/PCHC2016,maintainweb/milesmarketeer,diZturbio/CM-roots,ekandreas/sage-material-design,psorensen/TBC-Theme,gausie/jewdas.org,zacwasielewski/mccauley,drewwestphal/connect-theme,HYPD/sagetest,joshua-chavanne/laudable-info-refresh,jlm2017/theme-wp,gabzon/fiesta-travel,elihubogan/roots,eversoclever/medium,smutek/BourbonySage,jasonbutler42/grillinfools-theme,generoi/sage,filippoferri/oct172014,gabzon/experiensa-website,drrobotnik/roots,burbridgeconsulting/roots,tormjens/anunablade,PCHC/hopehouse,eatrero/atrero2015,haruair/haruair,leoken/SoHE,laras126/suya-theme,Foxaii/sage,gbarberi/sage,ramjack/rjfs-franchise-old,NateLSpence/serverus,avioli/roots,ChrisLTD/sage,danpliego/sage,t0t/annafont,rku4er/rks-wp,iboss-ptk/cuse_theme,ryoenji/sage,DesignPond/praticien_theme,zacwasielewski/inlet-wedding,filippoferri/oct262014,kellygrape/pfca,drrobotnik/roots,nickdotreid/healthdesignbyus-wordpress-theme,eddieospaghettio/qure,roots/sage,Internetmonkey/d1,ramjack/rjfs-franchise-old,ItAintTalon/Moments,wolfgangcode/wrangel,mykepreuss/roots,01walid/roots,gkmurray/sage,ColinWaddell/lang-roots,brainmangv/sage,dsa821/mgoblog,safetycat/catsage,MikeiLL/pure-demo,jeffsee55/sage-runfurman,shantanugautam/wp-gulp-theme,ColinWaddell/fish-roots,dstockdale/pps_roots,blackjak231/ag4l_roots,kevinreilly/wordpress,palpalani/sage,jmpdv/sage,Edvardoh/EctomorphTheme,ericimthorn/sage,aaronkelch/sage,JesusisFreedom/sage,leoken/eriksportfolio,k33n/sage,gabzon/dancefloor,eatrero/cordova,MikeiLL/black_sage_theme,zelimir83/sage,jchck/jchck_,NateLSpence/serverus,achoukah/trevors_head,oscarsmeulders/sage,MikeiLL/HealthyHappyHarmony,gelli/stonyray,maintainweb/ramprateinfo,gabzon/rosabrux,adelcasse/delcasse_fr,littlesumo/sage,sacredwebsite/sage,ptrckvzn/sage,simmerdesign/roots-6.5.2,UWAA/dawgdash2014,LechDutkiewicz/dinksy,CAYdenberg/sage,tbbooher/cffc2,heedfull/ClionaJoyce,sdphp/sdphp.org-WP-theme,Zaturrby/simulacrum-sage,dbhynds/sage,k33n/sage,jamessonbros/apexdetailing-theme,10w042/roots,craiglthompson1990/maps,fabiowitt/sage,mAAdhaTTah/gromf,arikan/yereldemok,fikinitiative/pith,gabzon/fiesta-travel,chuckn246/sage-foundation-sites,vonkanehoffen/sage,tripl3inf/BulbsOnly-v2,aspsomerville/roots-SR,ivan-shulev/despreneur-academy,PCHC/pharmacyresidency2017,kreapress/jaechicks-site,electronspin/hadron,jdcauley/roots-with-foundation,dynamick/wpstartboostrap,jamessonbros/smokymtn-theme,bobderrico80/sage,CAYdenberg/sage,adrianstaniloiu/sage,DoersGuild/wp-roots-woocommerce,jamessonbros/apexdetailing-theme,evanfuture/thyme,maintainweb/ramprate,leoken/codathedog,wprtl/sage-rtl,jessicahawkins3344/squarely,jcummings/MarshallU-Wordpress-Roots-Theme,awanderingorill/the-brm,AmosFord/fordsage,democracy-os-fr/sage,gabzon/rosabrux,nimi/nlm-theme,Internetmonkey/d1,Dedato/dedato,jwkicklighter/salon-vo-sage,awanderingorill/the-brm,IQ2022/sage,dbhynds/sage,ivan-shulev/despreneur-academy,islamx/mine,gabzon/dancefloor,kellygrape/mazeppa-roots,MikeiLL/cstewart,pennm018/roots,noskov/sage,tripl3inf/BulbsOnly-v2,codeclimate-testing/sage,masoninthesis/seaside-new,levito/kleineweile-wp-theme,MikeiLL/HealthyHappyHarmony,thenewblk/mahamusicfestival,honisoit/huntingslow,thenewblk/mahamusicfestival,zyre91/thezooguild,maintainweb/morrisons-jewelry,bobderrico80/nymb-v2,nonstndrd/nons_roots,jmpdv/sage,fingli/sage,bmoredrew/sage,zacwasielewski/wobbler,jasonbutler42/grillinfools-theme,BurfieldCreative/sage,aspsomerville/roots-SR,jwkicklighter/salon-vo-sage,PCHC/pharmacyresidency2017,tracyapps/sss,bigwilliam/sage-extended,entr/sage,MikeiLL/cstewart,simmerdesign/roots-6.5.2,tripl3inf/WordPlay-Theme,maintainweb/thelarman,MikeiLL/HealthyHappyHarmony,PCHC/pharmacyresidency2017,valenciafg/guanaima-theme,johnsolarz/modular,moetw/blog,idies/escience-2016-wp-theme,nickkos101/thezoo,democracy-os-fr/sage,daryltulay/vrcwebsite,mikeyspice/the-fritz-custom,webrain/yellowtree,matchboxdesigngroup/mdg-base-2014,ClimateFeedback/wordpress-theme,barrychampion/hgplantsales,MikeiLL/bludog,leoken/SoHE,mupi/atlasmedialab,ryoenji/sage,schikulski/Gromf,shoestrap/shoestrap-3,muhamadsyahril/themes-sage-master,Kilbourne/melarido,ekandreas/sage-material-design,jcarignan/sage,drrobotnik/roots,nickkos101/thezoo,JohnBueno/jw,MiquelAdell/blueprint,jcarignan/sage,ItAintTalon/Moments,Internetmonkey/paradisegardens,sinnwerkstatt/sinn-sage,ThemeSurgeon/sage,theGuruWithin/neo,filippoferri/oct262014,teaguecnelson/tn-tellis-bds,wajatimur/gtable-wptheme,hphioolen/SinglePage1,theportlandcompany/shoestrap-3,matchboxdesigngroup/mdg-base,lantern-creative/sage,Cleifai/tema_wp_roots,rku4er/nielsendesign-wp,tripl3inf/WordPlay-Theme,tmingos/sassy-roots,nomad-mystic/nomadmystic,skemantix/sage,nbranzburg/iconsult,gbarberi/sage,smhmic/roots,PaidSites/sage,cmkshaw/colin-smith,streetcoder/rootio-gulp,PCHC/pediatrics,mikaelmattsson/sage,smutek/BourbonySages-Rex,Foxaii/sage,MikeiLL/bludog,wespiper/skar,dboune/sage,randybondsjr/city-of-yakima-wp-theme-2015,nomad-mystic/nomadmystic,MikeiLL/poman,viettruong2194/quochoc55-58,MikeiLL/poman,spokencode/OneStream,jnettome/ato-theme,mikeyspice/the-fritz-custom,Nomad-Pals/Cascadia-Theme,honisoit/huntingslow,PCHC/dentalresidency,cudim/pages-theme,sciserver/gluseen_wp_theme,MikeiLL/pure-demo,ColinWaddell/fish-roots,gabzon/personal-webapp,miukimiu/sage-meninasgeeks,davidbunce/david-bunce-2015,gabzon/spoutnik,craiglthompson1990/maps,mckelvey/sage,bmoredrew/sage,apexskier/nodm-wp-theme,AnthonyTurrigiano/sage,Inggo/Sola,wespiper/skar,ptrckvzn/sage,skemantix/sage,MikeiLL/cstewart,dboune/sage,spokencode/OneStream,nonstndrd/nonstndrd,laras126/suya-theme,10w042/roots,elihubogan/roots,levito/kleineweile-wp-theme,Dedato/dedato,lantern-creative/sage,gabzon/experiensa,gkmurray/sage,eddieospaghettio/qure,tracyapps/sss,Kilbourne/melarido,puterakahfi/sage,levito/kleineweile-wp-theme,PCHC/ccpm,boskakke/sage-bt,bkahlert/sage-base,topecz/roots,zacwasielewski/mccauley,democracy-os-fr/sage,gabzon/experiensa-website,templesmc/tuupdate,JulienMelissas/sage,cadr-sa/shoestrap-3,aitormendez/506,ColinWaddell/roots-cwdc,Edvardoh/EctomorphTheme,christopherbruce/christopher-sage,generoi/sage,dguardia/testsage,hphioolen/SinglePage1,Iamronan/sage,vonkanehoffen/fieldarm,codeclimate-testing/sage,MManifesto/sage,herus02/barbaruiva-theme,PCHC/pediatrics,jeremystrom/sage,zacwasielewski/sage-customized,ryanschilling/roots-dummy,JohnBueno/jw,simmerdesign/roots-6.5.2,PCHC/hopehouse,filippoferri/sep292015,kellygrape/kapipe-roots,noskov/sage,CFERepo/cfe,MikeiLL/poman,heedfull/ClionaJoyce,thewellmetgroup/theme,robbintt/sage,zacwasielewski/wobbler,obelis/premium-real-estate-theme,Inggo/Sola,InPulseDigital/marymar,ivgalic/galibugs-theme,Tmeister/wp-roots-base-theme,romapad/sound-themplate,cudim/pages-theme,nsrosenqvist/sage,leoken/eriksportfolio,gabzon/sevinci-sage,pennm018/roots,jessicahawkins3344/squarely,littlesumo/sage,zyre91/thezooguild,spokencode/My-Roots-Starter-Theme,chuckn246/sage-foundation-sites,drewrawitz/wp-theme,kalenjohnson/sage,safetycat/catsage,shantanugautam/wp-gulp-theme,gabzon/voxmusica,filippoferri/oct172014,windeck/theme,jnettome/ato-theme,shoestrap/shoestrap-3,jchck/jchck_,firebelly/fb-sage,kab2512/sage,fingerpaintmarketing/sage,avioli/roots,WenderHost/pmd-sage-theme,ColinWaddell/lang-roots,kreapress/jaechicks-site,bostondv/roots,austinpray/sage,oxxido/bizop,MikeiLL/mZoo-wp-theme,Nomad-Pals/Cascadia-Theme,fusionpig/sage,memuller/benedict_theme-old,dynamick/wpstartboostrap,adelcasse/gaucheunie-wordpress-theme,electronspin/sage-f6,nonstndrd/nonstndrd,drewrawitz/wp-theme,commandante567/bugs,gabzon/sevinci-agency,daaveuk/glasseye,herus02/barbaruiva-theme,cyeph/demo,leoken/leoken,barnyp/sage,streetcoder/rootio-gulp,PCHC/dentalresidency,randybondsjr/city-of-yakima-wp-theme-2015,gopperman/fader-theme,theportlandcompany/shoestrap-3,eatrero/cordova,chaddanna/jenna-portfolio,Anunatak/anunastart,gkmurray/sage,CFERepo/cfe,Comunitas/JuntosWPTheme,matchboxdesigngroup/mdg-base,burbridgeconsulting/roots,gabzon/clochette,Bridgton-Academy/ba-roots,psteinweber/Kanso-Theme,NicBeltramelli/sage,nonstndrd/nons_roots,gabzon/sevinci-agency,daryltulay/vrcwebsite,zelimir83/sage,ramjack/wp-theme-landing-page,mubassirhayat/roots,oscarsmeulders/sage,tombaro/linje19-theme,jlm2017/theme-wp,gabzon/fiesta-travel,BurfieldCreative/sage,kellygrape/kapipe-roots,joshua-chavanne/laudable-info-refresh