Wider widget support (and renamed QLS type to widget)
Merge branch 'kemi' of https://github.com/software-engineering-amsterdam/sea-of-ql into kemi
Updated new widgets in QLS JS compiler
Completely revised QLS JS compiler. Pagination/sectioning works!
Several plugin enhancements

* QLS Stylesheets can now be build via the right click menu.
* QLS Stylesheets automatically rebuild the referencing form as well.
* QLS Stylesheets are automatically rebuilt when a stylesheet is saved. This also triggers rebuilding of the QL form.
Found a bug. We cannot fix it now though.
Empty sections are now hidden
Added WidgetTypeChecker to ensure correct widget types
Merge branch 'kemi'