Refinements + tenant object fixes

- Fixed admin UI to work with tenant displayName
- Removed creategroup page
- Used new XSS functions in admin UI
- Display improvements to notifications
- Default button styles
- List view improvements
- Skinning of active form fields
- Automatically select text when going into inline edit field
- List options title for activity widget
- Initial full-width fixes for activity widget
- Used tenant displayName in all appropriate places
- Simplified footer
- Consistent redirects
- Added search button to top search
- Search clip improvements
- Sign in dropdown improvements
- Absolute clips instead of relative clips
- Clean-up of core i18n bundles
- New video start image and play button improvements
- Removed unused images