Merge pull request #95 from yokose-ks/gacco2/master

Fix untranslated messages for help_modal.html
UPDATE UI 2014_06_11 AM
Merge pull request #96 from WatanabeYasumasa/gacco2/master

UPDATE UI 2014_06_11 AM
Merge pull request #97 from yokose-ks/gacco2/master

Fix message for resign_confirm.html
Update po/mo files
Emergency Fix on STUDY MENU on Smartphone
Merge pull request #98 from WatanabeYasumasa/gacco2/master

Emergency Fix on "STUDY MENU" in Smartphone View
Fix help-modal
Merge pull request #99 from WatanabeYasumasa/gacco2/master

Fix help-modal
Fix sidebar support URL
Merge pull request #100 from WatanabeYasumasa/gacco2/master

Fix sidebar support URL
Update po/mo files
bugfix around discussion (#comments, alert-modal)
Merge pull request #101 from skim-ks/gacco2/master

Gacco2/master
EDX-400: Fix bug of confirm prompt