adding activeDescendant to transient
Merge branch 'master' into flexi

* master:
  Correction on previous refactor
GameModel Correction to test
Flexi test, MCQ

@T8 : Key input, selector, link
*editor page slight correction
pageeditor overlay refactor

+ overlay catches pointer-events
+ Editable method getName() returns EDITORNAME / NAME
Flexitest Controller eventually shows tests
wegas-image widget -- url attr

+hijack "render" event to be fired once image is loaded
+error/load event, matching img's event
wegas-image edition w Fileexplorer
experimental css class

+ pageeditor experimental
Added some editor name
Flexitests specific response plugin

+Flexiresponse attrs:value
Some corrections