Fix emptySites param in sites REST API
GTNPORTAL-2886:
- update the tab's css for the mobile site
- fix various other css issues
- add the viewport setting to the dashboard and group pages
Mail notification for a user
GTNPORTAL-2881 adding better error feedback to the user
GTNPORTAL-2880 fixed skin-name based gatein-resource issues
GTNPORTAL-2900 fixed wrong link to documentation
GTNPORTAL-2901: Upgrade WCI to 2.3.1.CR02