Move refills to the development group
Move refills to the development group

Refills is not a runtime dependency. The gem is used strictly as a
generator in development mode. It's memory footprint is not
insignificant, so not loading in production will give us more headroom
on Heroku.

headwayio/voyage,Mossio/hashira-rails,delphaber/suspenders,zamith/suspenders,headwayio/suspenders,zamith/suspenders,mukkoo/welaika-suspenders,kvokka/suspenders,pedrosmmoreira/suspenders,zamith/suspenders,delphaber/suspenders,headwayio/suspenders,lorentrogers/suspenders,pacso/suspenders,lorentrogers/suspenders,toobulkeh/suspenders,pacso/suspenders,pedrosmmoreira/suspenders,brandoncordell/suspenders,namuit/welaika-suspenders,headwayio/voyage,toobulkeh/suspenders,namuit/welaika-suspenders,welaika/welaika-suspenders,thoughtbot/suspenders,mukkoo/welaika-suspenders,Mossio/hashira-rails,delphaber/suspenders,Mossio/hashira-rails,headwayio/voyage,kvokka/suspenders,headwayio/suspenders,headwayio/voyage,thoughtbot/suspenders,Mossio/hashira-rails,kvokka/suspenders,thoughtbot/suspenders,namuit/welaika-suspenders,mukkoo/welaika-suspenders,brandoncordell/suspenders,welaika/welaika-suspenders,lorentrogers/suspenders,headwayio/suspenders,welaika/welaika-suspenders,toobulkeh/suspenders,brandoncordell/suspenders,pedrosmmoreira/suspenders,pacso/suspenders