clean up image overlay, fix setting opacity/url when not added
clean up image overlay, fix setting opacity/url when not added

wancharle/Leaflet,javimolla/Leaflet,Neorth/Leaflet,akrzyzanowskino/TeamSE,hyperknot/Leaflet,litnerdy/Leaflet,devjoseluis/Leaflet,Neorth/Leaflet,starsolaris/Leaflet,wrrnwng/Leaflet,sisou/Leaflet,mediasuitenz/Leaflet,scaddenp/Leaflet,caiiiycuk/Leaflet,wpf500/Leaflet,brah/Leaflet,Ubisense/Leaflet,Leaflet/Leaflet,wancharle/Leaflet,geoloep/Leaflet,CorainChicago/Leaflet,javimolla/Leaflet,bbecquet/Leaflet,hyperknot/Leaflet,sisou/Leaflet,beni55/Leaflet,fab1an/Leaflet,davidlukerice/Leaflet,tsantacruz/RotationalMarker,codeator/Leaflet,pakro/Leaflet,eriksjaastad/Leaflet,fillerwriter/Leaflet,elfalem/Leaflet,jmutua2015/Leaflet,waeltken/Leaflet,brunocasanova/frontend-asset-leaflet,eriksjaastad/Leaflet,MuellerMatthew/Leaflet,fredericksilva/Leaflet,mourner/Leaflet,Srikanth4/Leaflet,fredericksilva/Leaflet,brah/Leaflet,twoubt/Leaflet,tormi/Leaflet,kjell/Leaflet,kumy/Leaflet,dhootha/Leaflet,Fil/Leaflet,alex2wong/Leaflet,stefanocudini/Leaflet,pakro/Leaflet,lee101/Leaflet,devjoseluis/Leaflet,lee101/Leaflet,Ubisense/Leaflet,hyperknot/Leaflet,davojta/Leaflet,webmechanicx/Leaflet,Leaflet/Leaflet,bolshoibooze/Leaflet,akauppi/Leaflet,msokk/Leaflet,nathancahill/Leaflet,grahamthompson/Leaflet,fillerwriter/Leaflet,Andrey-Pavlov/Leaflet,yohanboniface/Leaflet,nkovacs/Leaflet,eriksjaastad/Leaflet,olafurr/Leaflet,Jakobud/Leaflet,litnerdy/Leaflet,dhootha/Leaflet,jblarsen/Leaflet,juliensoret/Leaflet,RyanHickman/Leaflet,taraszerebecki/Leaflet,tomnod/Leaflet,mstahv/Leaflet,davojta/Leaflet,nvoron23/Leaflet,twoubt/Leaflet,snkashis/Leaflet,iZucken/Leaflet,cartant/Leaflet,caiiiycuk/Leaflet,andrewmartini/Leaflet,davojta/Leaflet,CorainChicago/Leaflet,elfalem/Leaflet,tsantacruz/RotationalMarker,tomnod/Leaflet,AP-whitehat/Leaflet,cartant/Leaflet,mbrukman/Leaflet,msiadak/Leaflet,AndBicScadMedia/Leaflet,billybonz1/Leaflet,yohanboniface/Leaflet,RyanHickman/Leaflet,codeator/Leaflet,Ossehoht/Leaflet,prashen/Leaflet,akrzyzanowskino/TeamSE,davidlukerice/Leaflet,RLRR/Leaflet,RobertoMalatesta/Leaflet,elfalem/Leaflet,gabrielpconceicao/frontend-asset-leaflet,w8r/Leaflet,dhootha/Leaflet,akauppi/Leaflet,waeltken/Leaflet,devjoseluis/Leaflet,mediasuitenz/Leaflet,rlugojr/Leaflet,Ubisense/Leaflet,w8r/Leaflet,alex2wong/Leaflet,andrewmartini/Leaflet,jblarsen/Leaflet,sisou/Leaflet,nathancahill/Leaflet,pzdz/Leaflet,Trufi/Leaflet,RobertoMalatesta/Leaflet,msiadak/Leaflet,yohanboniface/Leaflet,DrillingInfo/Leaflet,MuellerMatthew/Leaflet,caiiiycuk/Leaflet,mediasuitenz/Leaflet,MuellerMatthew/Leaflet,beni55/Leaflet,iZucken/Leaflet,sellonen/Leaflet,starsolaris/Leaflet,AP-whitehat/Leaflet,scaddenp/Leaflet,mbrukman/Leaflet,wrrnwng/Leaflet,msiadak/Leaflet,brunocasanova/frontend-asset-leaflet,webmechanicx/Leaflet,elkingtonmcb/Leaflet,tbassett44/Leaflet,rlugojr/Leaflet,msokk/Leaflet,fredericksilva/Leaflet,kumy/Leaflet,iamjonbradley/Leaflet,nycitt/Leaflet,nikhildhamsaniya/Leaflet,Ossehoht/Leaflet,mstahv/Leaflet,billybonz1/Leaflet,Ossehoht/Leaflet,litnerdy/Leaflet,RLRR/Leaflet,snkashis/Leaflet,mstahv/Leaflet,jblarsen/Leaflet,patrickarlt/Leaflet,brah/Leaflet,iamjonbradley/Leaflet,tsantacruz/RotationalMarker,psicomante/Leaflet,prashen/Leaflet,Jakobud/Leaflet,2gis/Leaflet,2gis/Leaflet,CapeSepias/Leaflet,klaftertief/Leaflet,geoloep/Leaflet,klaftertief/Leaflet,Srikanth4/Leaflet,pzdz/Leaflet,nycitt/Leaflet,klaftertief/Leaflet,CorainChicago/Leaflet,w8r/Leaflet,huangsong/Leaflet,twoubt/Leaflet,psicomante/Leaflet,Trufi/Leaflet,2gis/Leaflet,snkashis/Leaflet,fab1an/Leaflet,codeator/Leaflet,tomnod/Leaflet,nathancahill/Leaflet,juliensoret/Leaflet,msokk/Leaflet,thalesfsp/Leaflet,bolshoibooze/Leaflet,elkingtonmcb/Leaflet,wrrnwng/Leaflet,mbrukman/Leaflet,stefanocudini/Leaflet,nikhildhamsaniya/Leaflet,AndBicScadMedia/Leaflet,nycitt/Leaflet,sellonen/Leaflet,jasonoverland/Leaflet,pakro/Leaflet,CapeSepias/Leaflet,starsolaris/Leaflet,frogcat/Leaflet,thalesfsp/Leaflet,bolshoibooze/Leaflet,iOffice/Leaflet,Fil/Leaflet,iOffice/Leaflet,stefanocudini/Leaflet,webmechanicx/Leaflet,scaddenp/Leaflet,DrillingInfo/Leaflet,nikhildhamsaniya/Leaflet,danzel/Leaflet,grahamthompson/Leaflet,nkovacs/Leaflet,RobertoMalatesta/Leaflet,AP-whitehat/Leaflet,tbassett44/Leaflet,CapeSepias/Leaflet,Fil/Leaflet,Trufi/Leaflet,olafurr/Leaflet,jmutua2015/Leaflet,Andrey-Pavlov/Leaflet,jasonoverland/Leaflet,taraszerebecki/Leaflet,davidlukerice/Leaflet,bbecquet/Leaflet,geoloep/Leaflet,waeltken/Leaflet,bbecquet/Leaflet,Andrey-Pavlov/Leaflet,gabrielpconceicao/frontend-asset-leaflet,gabrielpconceicao/frontend-asset-leaflet,northerneyes/Leaflet,RLRR/Leaflet,fab1an/Leaflet,tormi/Leaflet,grahamthompson/Leaflet,sambernet/Leaflet,Leaflet/Leaflet,sambernet/Leaflet,fillerwriter/Leaflet,brunocasanova/frontend-asset-leaflet,andrewmartini/Leaflet,akrzyzanowskino/TeamSE,frogcat/Leaflet,northerneyes/Leaflet,kjell/Leaflet,Mark-Wood/Leaflet,jasonoverland/Leaflet,pzdz/Leaflet,tormi/Leaflet,mourner/Leaflet,sellonen/Leaflet,cartant/Leaflet,Mark-Wood/Leaflet,olafurr/Leaflet,AndBicScadMedia/Leaflet,thalesfsp/Leaflet,wpf500/Leaflet,prashen/Leaflet,billybonz1/Leaflet,taraszerebecki/Leaflet,huangsong/Leaflet,psicomante/Leaflet,javimolla/Leaflet,wpf500/Leaflet,rlugojr/Leaflet,huangsong/Leaflet,Srikanth4/Leaflet,patrickarlt/Leaflet,tbassett44/Leaflet,beni55/Leaflet,alex2wong/Leaflet,cmulders/Leaflet,lee101/Leaflet,Neorth/Leaflet,Jakobud/Leaflet,nvoron23/Leaflet,cmulders/Leaflet,akauppi/Leaflet,wancharle/Leaflet,kumy/Leaflet,cmulders/Leaflet,jmutua2015/Leaflet,iamjonbradley/Leaflet,iZucken/Leaflet,elkingtonmcb/Leaflet,mourner/Leaflet,moklick/Leaflet,frogcat/Leaflet,iOffice/Leaflet,RyanHickman/Leaflet,sambernet/Leaflet