Formslib element: editor

The new "editor" form element is similar to the old "htmleditor" component in that it will print an editor for text etc (like tinymce).

In addtion it:

• requires draftfileareaid, format, current language (and possibly more things later) passed in using JS globals
• will use the repository filepicker at all input points within the editor interface

Later on we can add:

• support for special editors for special formats.
• support conversion of formats (eg into html).