- refactored part of naming to use commit_id instead of revision
- renamed some parts to repo_commits instead of changeset without breaking backward compat
- small improvements and fixes for tests
- invalidated comments now link to previous version to show code context
- removed all deprecated JS code left from new diffs
- improved invalidated comments display logic
- UI tweaks
We replaced it with similar to babel functions _gettext, and _ngettext, that
will prevent UI from breaking in case of untranslated strings. This
also will allow to use babel built in extractors to fetch the translations
stored inside html and JS.