Merge branch 'security' into 'master'
Added note about backing up recovery codes Several people have tried to recover their 2FA codes. I think we could be more clear about it in the docs. This is why I added a section about it at the top, so they read it before enabling them. https://twitter.com/deathgreps/status/632006221814464512 https://twitter.com/benniemosher/status/633768429313372160 See merge request !1923