Gallery, WordPressTitle, Popup, Fontsize, L18n, Link color, Undefined

* Gallery; 320x200 instead of 640x400 for gallery size (if images are
uploaded with smaller dimensions, the aspect ratio is messed up)
* WordPressTitle is new widget (re-introduced)
* Popups for widgets now also transfer the containerpostid
* Fontsize now applies to any container that has class nxs-default-p (no
matter if its a div, or other element)
* Added 0.8 as valid fontsize
* Popup options; Custom optiontype now has ability to delegate rendering
of the "content" part to a function using the 'customcontenthandler'
property.
* Popup options; select and input now support the "required" property.
If option is required, a "*" is added after the label.
* L18n; site, twitter, text,
* Linkcolor: comments widget
* Background style properties of widget now references generic styling
* Undefined widget; shortens widget titles if becoming too long, shows
full title in tooltip