Clicking the panel separator now autohides the tree panel. #tsk61

The panel is expanded when hovering over the separator and hidden when
the mouse left the tree.
Clicking in the separator again turn off the autohiding behavior.
Removing deprecated actions from the core
Fixing some minor issues on createlink, createrole and emptynode actions.
Arrange actions and new translations strings.
Allowing to modify the role in the General group for the current user. Also, arrange more actions on the SQL installer.
Decopling schemes folder name
Final changes on links management and improving email validation with 'mailto:'
Functional changes in Workflow forward actions and widgets. Styles must be changed
Merge branch 'master' of https://github.com/XIMDEX/ximdex
Deleting unused parts of kupu extension and creting a new config field to switch the environment between dev/pro
Another merge branch 'master' of https://github.com/XIMDEX/ximdex for changes in common files
[GUI] Selection theme gallery at create new project action
Merge branch 'master' of github.com:XIMDEX/ximdex

* 'master' of github.com:XIMDEX/ximdex:
  Deleting unused parts of kupu extension and creting a new config field to switch the environment between dev/pro
[GUI]Fixing hide-text extend functionality on firefox
Added alphanumeric rule to client side validation of addfoldernode and addsectionnode.
Adding support to big files in uploader widget
Merge branch 'master' of https://github.com/XIMDEX/ximdex
First approach to te new links checker
Moving the date to the check icon's tooltip
Adding getIntervals function for workflow_forward action