Styling, Contact widget, Widget init

* Styling; Added 0 as image border width option
* Contact widget; outputs url where it was triggered
* Contact widget; mail output is now in English
* Contact widget; additional warnings; earticle not set, email not set,
invalid email set
* Widget init; now uses initialvalue property if set, and optionally
invoked ..._initplaceholderdata method too if present
* Closing popup no longer triggers updating the editor state (preventing
system to scroll when popup is closed)