Handle updating widget without specified widget config.

Fix for widget config not updating correctly.

ADF framework cleanup:

• removed single widget edit mode
• removed min size restrictions
• code cleanup
• versions upgrade
• adapting to angular-legacy-sortable

Switch Sortable repo.

Sortable repo switch

Add option that the type of the widget and title can be changed through dashboard API.

Fix for save triggering twice when moving widgets.
Change track by $index to track by widget id for adf-widget.

Added option to add a widget through dashboard api.
Added functionality to trigger editing config event.