Rename payment_method hook in admin/payments/_form to payment_method_field
Rename payment_method hook in admin/payments/_form to payment_method_field

This hook conflicts with the hook in payment_methods/_form

Fixes #1737

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