Added event to refresh the menu of an Editor. Used in the Attributes section of a Product, where the fields are dynamic.
Fixed Models loading in Models service.
"selection" parameter is now optional on Actions declaration.
In Markdown editor, fixed publishable Documents and Media selectors.
Removed unused variables.
Added possibility to define the size (max-width and max-height) for images in the Markdown parser.
Merge pull request #315 from fredericbonjour/Admin

Fixed Markdown editor for Publishable documents and Media selection, and added possibility to define the image size.