Logout URL was never called when API signOut call fail.
the Public and Option chat tabs now match the selected locale at all times
added check to make sure tabs exist
Merge pull request #248 from SenecaCDOT-BigBlueButton/fix-chattab-localization

Fix chattab localization
Merge pull request #246 from bigbluebutton/fix-logout-url-call

Logout URL was never called when API signOut call fail.
Changing lable to RC1
added two strings in the log out window to locales
Merge pull request #249 from SenecaCDOT-BigBlueButton/fix-logout-window-localisation

added two strings in the log out window to locales
merge upstream