Convert category helpers to ES6.
FIX: properly close topics in vBulletin importer

FEATURE: add backtrace when an exception happen (importers)
FIX: post-processing should also happen on first posts (vBulletin
importer)
PERF: faster topic bypass when already imported
Update Translations
Merge pull request #2755 from techAPJ/patch-2

Update Translations
FEATURE: Show an email icon beside posts that arrived via email
FEATURE: reset topic counters at the end of the import
FIX: always show the progress bars when skipping posts/users in importers
FIX: add classes to mobile education panels
FIX: tabindex was not set on the category chooser when creating a topic.
Remove deprecated `Ember.Set`
hide category name for Uncategorized topics while oneboxing
rename site settings for trust levels as numbers
more renaming of trust level settings
more renaming of trust level settings
copyedit on full name help
FIX: edit history user setting was appearing
lighten wiki and email left gutter icons a bit
FIX: migrate trust level site settings
fixing egg-shaped badges on mobile
Merge pull request #2758 from awesomerobot/master

fixing egg-shaped badges on mobile