FIX: Sharing link stood visible after using browser’s back button
Update DEVELOPER-ADVANCED.md

To install the gem pg-0.15.1, you need to have libpq-dev installed. Otherwise bundle install will fail.
See http://stackoverflow.com/questions/16788062/error-running-gem-install-pg-v-0-15-1
API addition: HTTP PATCH support for /groups/xxx: incremental membership changes
Update DEVELOPER-ADVANCED.md

Merged installation instruction for libpq-dev into step 4.
Update DEVELOPER-ADVANCED.md

Fixed numbering of list items.
Merge pull request #2991 from techAPJ/update-translations

Update Translations
FIX: when adding an IP to the spammer list, check the broader ban list
first

FEATURE: allow admins to search users using IP ranges
check that `changes` param is present
Merge branch 'master' into group-admin-incremental
UX: suppress long cat names in topic lists
FEATURE: export screened IPs list in a CSV file
Merge pull request #2992 from techAPJ/patch-4

FEATURE: export screened IPs list in a CSV file
UX: suppress long cat names in cat drop down too
return a promise instead of triggering bootbox in model
sort screened IPs by match_count
Merge pull request #2994 from techAPJ/patch-5

sort screened IPs by match_count
Merge pull request #2993 from techAPJ/patch-4

Return a promise instead of triggering bootbox in model
translate welcome message images to cs
Add more SSO logging for failure conditions
Add more logging for blank posts to detect culprit