Use 1.8 compatible BigDecimal parsing in PriceSack
Use 1.8 compatible BigDecimal parsing in PriceSack

Fixes this build: https://travis-ci.org/#!/spree/spree/jobs/2701882

gautamsawhney/spree,rakibulislam/spree,karlitxo/spree,siddharth28/spree,surfdome/spree,pervino/spree,thogg4/spree,jeffboulet/spree,xuewenfei/solidus,net2b/spree,patdec/spree,odk211/spree,tomash/spree,DynamoMTL/spree,kewaunited/spree,bjornlinder/Spree,azranel/spree,archSeer/spree,progsri/spree,madetech/spree,alepore/spree,richardnuno/solidus,vinsol/spree,lzcabrera/spree-1-3-stable,softr8/spree,joanblake/spree,radarseesradar/spree,Boomkat/spree,DarkoP/spree,kewaunited/spree,NerdsvilleCEO/spree,Kagetsuki/spree,Arpsara/solidus,grzlus/spree,NerdsvilleCEO/spree,vinsol/spree,vmatekole/spree,firman/spree,sideci-sample/sideci-sample-spree,AgilTec/spree,azranel/spree,cutefrank/spree,shaywood2/spree,Antdesk/karpal-spree,ahmetabdi/spree,alvinjean/spree,jimblesm/spree,Lostmyname/spree,dafontaine/spree,yomishra/pce,rbngzlv/spree,ahmetabdi/spree,calvinl/spree,edgward/spree,madetech/spree,jordan-brough/solidus,fahidnasir/spree,woboinc/spree,pervino/spree,firman/spree,grzlus/spree,beni55/spree,PhoenixTeam/spree_phoenix,rbngzlv/spree,ckk-scratch/solidus,kewaunited/spree,orenf/spree,degica/spree,Antdesk/karpal-spree,judaro13/spree-fork,omarsar/spree,CJMrozek/spree,zaeznet/spree,shekibobo/spree,jordan-brough/solidus,codesavvy/sandbox,lsirivong/solidus,builtbybuffalo/spree,maybii/spree,FadliKun/spree,hifly/spree,tomash/spree,shekibobo/spree,surfdome/spree,athal7/solidus,jhawthorn/spree,vcavallo/spree,shaywood2/spree,raow/spree,Ropeney/spree,ujai/spree,groundctrl/spree,karlitxo/spree,net2b/spree,pervino/spree,NerdsvilleCEO/spree,mleglise/spree,hifly/spree,zamiang/spree,builtbybuffalo/spree,DynamoMTL/spree,KMikhaylovCTG/spree,bricesanchez/spree,siddharth28/spree,kitwalker12/spree,lsirivong/spree,orenf/spree,freerunningtech/spree,vinsol/spree,StemboltHQ/spree,softr8/spree,jeffboulet/spree,builtbybuffalo/spree,JuandGirald/spree,shaywood2/spree,azclick/spree,woboinc/spree,ckk-scratch/solidus,edgward/spree,xuewenfei/solidus,grzlus/solidus,beni55/spree,Senjai/spree,knuepwebdev/FloatTubeRodHolders,hifly/spree,lzcabrera/spree-1-3-stable,Migweld/spree,derekluo/spree,trigrass2/spree,raow/spree,bonobos/solidus,agient/agientstorefront,lsirivong/spree,pulkit21/spree,DarkoP/spree,tancnle/spree,groundctrl/spree,pervino/solidus,TimurTarasenko/spree,shioyama/spree,cutefrank/spree,RatioClothing/spree,dandanwei/spree,pulkit21/spree,JuandGirald/spree,alvinjean/spree,zaeznet/spree,TrialGuides/spree,softr8/spree,jhawthorn/spree,robodisco/spree,surfdome/spree,TimurTarasenko/spree,grzlus/solidus,pjmj777/spree,rakibulislam/spree,project-eutopia/spree,mindvolt/spree,sliaquat/spree,Ropeney/spree,moneyspyder/spree,sfcgeorge/spree,jasonfb/spree,jaspreet21anand/spree,sfcgeorge/spree,karlitxo/spree,lsirivong/spree,Machpowersystems/spree_mach,derekluo/spree,Ropeney/spree,reinaris/spree,jspizziri/spree,JDutil/spree,pervino/solidus,scottcrawford03/solidus,yushine/spree,reidblomquist/spree,Senjai/solidus,joanblake/spree,keatonrow/spree,Lostmyname/spree,jparr/spree,alepore/spree,dafontaine/spree,locomotivapro/spree,moneyspyder/spree,ramkumar-kr/spree,kewaunited/spree,urimikhli/spree,Migweld/spree,tesserakt/clean_spree,adaddeo/spree,JDutil/spree,keatonrow/spree,hoanghiep90/spree,sunny2601/spree,Hawaiideveloper/shoppingcart,PhoenixTeam/spree_phoenix,Mayvenn/spree,jeffboulet/spree,bjornlinder/Spree,jaspreet21anand/spree,joanblake/spree,useiichi/spree,pjmj777/spree,jordan-brough/spree,jspizziri/spree,HealthWave/spree,omarsar/spree,builtbybuffalo/spree,CiscoCloud/spree,locomotivapro/spree,welitonfreitas/spree,tomash/spree,RatioClothing/spree,agient/agientstorefront,HealthWave/spree,athal7/solidus,reidblomquist/spree,mleglise/spree,useiichi/spree,pervino/solidus,APohio/spree,biagidp/spree,lsirivong/solidus,TimurTarasenko/spree,assembledbrands/spree,bricesanchez/spree,lsirivong/solidus,odk211/spree,nooysters/spree,devilcoders/solidus,berkes/spree,ahmetabdi/spree,Mayvenn/spree,agient/agientstorefront,dotandbo/spree,surfdome/spree,robodisco/spree,HealthWave/spree,reinaris/spree,yushine/spree,quentinuys/spree,odk211/spree,Kagetsuki/spree,jasonfb/spree,Machpowersystems/spree_mach,ckk-scratch/solidus,patdec/spree,quentinuys/spree,jimblesm/spree,lyzxsc/spree,jimblesm/spree,rakibulislam/spree,rakibulislam/spree,Hawaiideveloper/shoppingcart,biagidp/spree,DynamoMTL/spree,gautamsawhney/spree,calvinl/spree,vcavallo/spree,urimikhli/spree,piousbox/spree,grzlus/spree,welitonfreitas/spree,shekibobo/spree,welitonfreitas/spree,priyank-gupta/spree,RatioClothing/spree,watg/spree,archSeer/spree,CiscoCloud/spree,KMikhaylovCTG/spree,groundctrl/spree,Kagetsuki/spree,scottcrawford03/solidus,locomotivapro/spree,alejandromangione/spree,progsri/spree,CJMrozek/spree,tancnle/spree,caiqinghua/spree,JDutil/spree,jsurdilla/solidus,dotandbo/spree,jaspreet21anand/spree,DarkoP/spree,watg/spree,imella/spree,camelmasa/spree,madetech/spree,dandanwei/spree,jordan-brough/solidus,JDutil/spree,Nevensoft/spree,gregoryrikson/spree-sample,jordan-brough/spree,dotandbo/spree,zaeznet/spree,brchristian/spree,radarseesradar/spree,degica/spree,ramkumar-kr/spree,priyank-gupta/spree,adaddeo/spree,tomash/spree,codesavvy/sandbox,alvinjean/spree,caiqinghua/spree,Senjai/solidus,karlitxo/spree,maybii/spree,CJMrozek/spree,sliaquat/spree,gautamsawhney/spree,keatonrow/spree,dandanwei/spree,archSeer/spree,DarkoP/spree,hifly/spree,Lostmyname/spree,zamiang/spree,net2b/spree,adaddeo/spree,Hawaiideveloper/shoppingcart,vinayvinsol/spree,assembledbrands/spree,richardnuno/solidus,devilcoders/solidus,hoanghiep90/spree,fahidnasir/spree,maybii/spree,mindvolt/spree,delphsoft/spree-store-ballchair,LBRapid/spree,jparr/spree,jsurdilla/solidus,softr8/spree,ayb/spree,thogg4/spree,bonobos/solidus,mleglise/spree,carlesjove/spree,azclick/spree,adaddeo/spree,tancnle/spree,volpejoaquin/spree,scottcrawford03/solidus,firman/spree,trigrass2/spree,reinaris/spree,omarsar/spree,sliaquat/spree,ckk-scratch/solidus,mindvolt/spree,lyzxsc/spree,zamiang/spree,sunny2601/spree,vmatekole/spree,trigrass2/spree,derekluo/spree,yiqing95/spree,trigrass2/spree,yiqing95/spree,bricesanchez/spree,caiqinghua/spree,imella/spree,TrialGuides/spree,camelmasa/spree,sliaquat/spree,sfcgeorge/spree,LBRapid/spree,JuandGirald/spree,yomishra/pce,azclick/spree,AgilTec/spree,raow/spree,azranel/spree,Arpsara/solidus,radarseesradar/spree,APohio/spree,alejandromangione/spree,cutefrank/spree,kitwalker12/spree,dandanwei/spree,rajeevriitm/spree,hoanghiep90/spree,PhoenixTeam/spree_phoenix,richardnuno/solidus,joanblake/spree,ayb/spree,FadliKun/spree,NerdsvilleCEO/spree,jeffboulet/spree,Hates/spree,zaeznet/spree,jparr/spree,piousbox/spree,Machpowersystems/spree_mach,codesavvy/sandbox,xuewenfei/solidus,yiqing95/spree,Senjai/spree,watg/spree,Hates/spree,abhishekjain16/spree,PhoenixTeam/spree_phoenix,urimikhli/spree,moneyspyder/spree,thogg4/spree,devilcoders/solidus,Nevensoft/spree,TrialGuides/spree,yushine/spree,brchristian/spree,Arpsara/solidus,TimurTarasenko/spree,shioyama/spree,ayb/spree,dafontaine/spree,carlesjove/spree,lzcabrera/spree-1-3-stable,sunny2601/spree,jordan-brough/spree,Senjai/solidus,vinayvinsol/spree,madetech/spree,keatonrow/spree,volpejoaquin/spree,grzlus/solidus,ramkumar-kr/spree,wolfieorama/spree,progsri/spree,shioyama/spree,locomotivapro/spree,siddharth28/spree,SadTreeFriends/spree,ramkumar-kr/spree,vcavallo/spree,grzlus/spree,tailic/spree,devilcoders/solidus,tesserakt/clean_spree,Senjai/solidus,Engeltj/spree,net2b/spree,welitonfreitas/spree,firman/spree,TrialGuides/spree,abhishekjain16/spree,azranel/spree,brchristian/spree,Migweld/spree,project-eutopia/spree,knuepwebdev/FloatTubeRodHolders,judaro13/spree-fork,Lostmyname/spree,CJMrozek/spree,tailic/spree,tailic/spree,beni55/spree,forkata/solidus,caiqinghua/spree,freerunningtech/spree,Arpsara/solidus,lsirivong/solidus,raow/spree,sfcgeorge/spree,quentinuys/spree,cutefrank/spree,ujai/spree,volpejoaquin/spree,ujai/spree,siddharth28/spree,hoanghiep90/spree,miyazawatomoka/spree,jimblesm/spree,jasonfb/spree,gregoryrikson/spree-sample,mindvolt/spree,berkes/spree,sunny2601/spree,rajeevriitm/spree,delphsoft/spree-store-ballchair,project-eutopia/spree,ahmetabdi/spree,njerrywerry/spree,StemboltHQ/spree,mleglise/spree,pervino/solidus,AgilTec/spree,rbngzlv/spree,piousbox/spree,useiichi/spree,jsurdilla/solidus,jspizziri/spree,SadTreeFriends/spree,tesserakt/clean_spree,bonobos/solidus,gregoryrikson/spree-sample,Kagetsuki/spree,orenf/spree,miyazawatomoka/spree,woboinc/spree,Ropeney/spree,carlesjove/spree,wolfieorama/spree,priyank-gupta/spree,njerrywerry/spree,Hates/spree,dafontaine/spree,tesserakt/clean_spree,nooysters/spree,imella/spree,tancnle/spree,reidblomquist/spree,judaro13/spree-fork,carlesjove/spree,odk211/spree,pulkit21/spree,APohio/spree,JuandGirald/spree,DynamoMTL/spree,camelmasa/spree,fahidnasir/spree,bonobos/solidus,njerrywerry/spree,jaspreet21anand/spree,vcavallo/spree,KMikhaylovCTG/spree,Nevensoft/spree,FadliKun/spree,lyzxsc/spree,vulk/spree,quentinuys/spree,Boomkat/spree,abhishekjain16/spree,beni55/spree,Engeltj/spree,vulk/spree,SadTreeFriends/spree,derekluo/spree,shekibobo/spree,miyazawatomoka/spree,rajeevriitm/spree,dotandbo/spree,Senjai/spree,delphsoft/spree-store-ballchair,abhishekjain16/spree,jsurdilla/solidus,forkata/solidus,azclick/spree,KMikhaylovCTG/spree,athal7/solidus,alvinjean/spree,bjornlinder/Spree,moneyspyder/spree,reinaris/spree,piousbox/spree,shaywood2/spree,volpejoaquin/spree,xuewenfei/solidus,kitwalker12/spree,Boomkat/spree,alejandromangione/spree,jparr/spree,richardnuno/solidus,nooysters/spree,APohio/spree,ayb/spree,sideci-sample/sideci-sample-spree,gautamsawhney/spree,Engeltj/spree,orenf/spree,AgilTec/spree,reidblomquist/spree,biagidp/spree,FadliKun/spree,berkes/spree,vulk/spree,njerrywerry/spree,rbngzlv/spree,pjmj777/spree,nooysters/spree,brchristian/spree,project-eutopia/spree,jasonfb/spree,vulk/spree,vinayvinsol/spree,vmatekole/spree,StemboltHQ/spree,vmatekole/spree,zamiang/spree,Antdesk/karpal-spree,alepore/spree,radarseesradar/spree,jordan-brough/solidus,patdec/spree,lyzxsc/spree,knuepwebdev/FloatTubeRodHolders,lsirivong/spree,robodisco/spree,athal7/solidus,maybii/spree,useiichi/spree,Boomkat/spree,edgward/spree,forkata/solidus,wolfieorama/spree,Hawaiideveloper/shoppingcart,forkata/solidus,wolfieorama/spree,Mayvenn/spree,robodisco/spree,SadTreeFriends/spree,camelmasa/spree,Migweld/spree,CiscoCloud/spree,agient/agientstorefront,patdec/spree,Nevensoft/spree,alejandromangione/spree,gregoryrikson/spree-sample,Engeltj/spree,assembledbrands/spree,archSeer/spree,delphsoft/spree-store-ballchair,yomishra/pce,vinsol/spree,jspizziri/spree,calvinl/spree,groundctrl/spree,berkes/spree,yushine/spree,sideci-sample/sideci-sample-spree,vinayvinsol/spree,LBRapid/spree,CiscoCloud/spree,freerunningtech/spree,jhawthorn/spree,fahidnasir/spree,pervino/spree,scottcrawford03/solidus,priyank-gupta/spree,Mayvenn/spree,codesavvy/sandbox,grzlus/solidus,calvinl/spree,Hates/spree,omarsar/spree,thogg4/spree,degica/spree,rajeevriitm/spree,miyazawatomoka/spree,edgward/spree,yiqing95/spree,progsri/spree,pulkit21/spree