SaveTo plugin for forms

+ CSSSize plugin
BG for form edition

* fixed call to destroyed widget
*flexitest css disables UV
Merge branch 'master' of github.com:Heigvd/Wegas

* 'master' of github.com:Heigvd/Wegas:
  Fix EditorGameController to use first game (the DebugGame) Fix issue in wegas-inputex-ace dependencies (add css)
  Add template selection in proggame-level widget edition
  Fix issue in wegas-widgetmenu.js nested fields
  Add classFilter to wegas-inputex-variableselect.js

Conflicts:
	wegas-app/src/main/webapp/wegas-editor/css/wegas-inputex.css