Improvements in the back-end widgets
Changes in the popover styling
Improvements in the CMS objects and back-end UI.
+ Table Sessions
Merge pull request #653 from gustavoaragon/master

+ Table Sessions
Refs #653 - Move sessions table to system
Fixes in the rich editor, improved the content block rendering code, minor fixes in the popover and form styling.
Merge branch 'develop' into misc-tmp
Fixes #633 - Return to previous keymap
Removes deprecated code