Allow admins to edit everything
Allow admins to edit everything

Closes #562

ninneko/redash,imsally/redash,hudl/redash,chriszs/redash,chriszs/redash,M32Media/redash,jmvasquez/redashtest,crowdworks/redash,vishesh92/redash,guaguadev/redash,stefanseifert/redash,moritz9/redash,alexanderlz/redash,44px/redash,pubnative/redash,ninneko/redash,akariv/redash,stefanseifert/redash,44px/redash,guaguadev/redash,rockwotj/redash,EverlyWell/redash,stefanseifert/redash,amino-data/redash,akariv/redash,getredash/redash,stefanseifert/redash,easytaxibr/redash,alexanderlz/redash,ninneko/redash,moritz9/redash,getredash/redash,easytaxibr/redash,EverlyWell/redash,amino-data/redash,denisov-vlad/redash,crowdworks/redash,chriszs/redash,imsally/redash,useabode/redash,jmvasquez/redashtest,rockwotj/redash,rockwotj/redash,denisov-vlad/redash,44px/redash,pubnative/redash,guaguadev/redash,akariv/redash,vishesh92/redash,pubnative/redash,ninneko/redash,moritz9/redash,useabode/redash,stefanseifert/redash,useabode/redash,44px/redash,pubnative/redash,easytaxibr/redash,crowdworks/redash,jmvasquez/redashtest,M32Media/redash,alexanderlz/redash,amino-data/redash,akariv/redash,vishesh92/redash,useabode/redash,hudl/redash,guaguadev/redash,guaguadev/redash,getredash/redash,hudl/redash,denisov-vlad/redash,akariv/redash,denisov-vlad/redash,vishesh92/redash,getredash/redash,chriszs/redash,jmvasquez/redashtest,jmvasquez/redashtest,EverlyWell/redash,M32Media/redash,ninneko/redash,EverlyWell/redash,imsally/redash,amino-data/redash,alexanderlz/redash,rockwotj/redash,hudl/redash,pubnative/redash,M32Media/redash,imsally/redash,crowdworks/redash,easytaxibr/redash,getredash/redash,easytaxibr/redash,moritz9/redash,denisov-vlad/redash