Merged r2763 from trunk.
Fixed: Atom feeds leak email address (#3408).
Validate project identifier only when changed (#3352).
tagged version 0.8.4
Link to the appropriate repository (#3376).
ru.yml translation, adding to zh.yml missed string
Translation updates (#3374, #3375, # 3378, #3380, #3381)
Fixed an interpolation argument error in nl.yml
Fixes code comments.
Translations updates.
