ENYO-2558: Fixed small regressions in Designer, fixed icons not displayed in Designer.

* Merge branch 'master' of github.com:enyojs/ares-project into ENYO-2558
* ENYO-2558: Fixed issue on onyx.Input type property not updated in application code.
* ENYO-2558: Add "$app" to enyo.path for image path (src attribute) resolution when the app is running into Ares Designer.
* ENYO-2558: In create mode, allow to drop even on the selected component.
* ENYO-2558: Removed dead code

Tested on Chrome/OSX

Enyo-DCO-1.1-Signed-off-by: Yves Del Medico <yves.del-medico@hp.com>