Use native JSON.stringify instead of dojo.toJson (@peller)
Replace _Widget, _Templated, widgetsInTemplate:true with _WidgetBase,
_TemplatedMixin, and _WidgetsInTemplateMixin (@peller)
Fixes #3857 - make sure project dropdown doesn't shrink too small on
Firefox
Merge branch 'master' of github.com:maqetta/maqetta