should fix the mobile toggle for the case: desktop --to--> mobile #3299
also, (possibly) fix tablet issue #3421, + tests
Merge pull request #3433 from Raven24/fix-mobile-toggle

fix some mobile/tablet related stuff
make the rake task for cleaning up mixed-case tags more verbose [ci skip]
Clarify warning shown when single_process_mode used in production
Merge pull request #3434 from Raven24/fix-tag-cleanup

make the rake task for cleaning up mixed-case tags more verbose
Change root_url to root_path
Merge pull request #3440 from movilla/master

Change root_url to root_path
Merge pull request #3436 from L2G/master

Clarify warning shown when single_process_mode used in production
Fix error admins/weekly_user_stats
Merge pull request #3441 from movilla/master

Fix error admins/weekly_user_stats
updated 16 locale files [ci skip]
Updated the Galician (gl) translation.
Merge pull request #3442 from Gallaecio/l10n-gl

Updated the Galician (gl) translation.
use unminified jQuery textchange plugin
update jquery.mentionsInput to latest version
+ make some tests a little nicer
Merge pull request #3444 from Raven24/update-mentions

update jquery.mentionsInput to latest version
use unminified jQuery.textchange
Mobile bookmarklet was not loading jQuery causing javascript to not execute, fixes #3204
Merge pull request #3446 from jaywink/3204-mobile_bookmarklet_fix

Fix for #3204 Mobile bookmark not working
Update Catalan translation to 8c8ff1f.
Catalan translation updated to 8c8ff1f.