Code style fixes.

Fix config update

Fix default widget config properties changing through widget

- ADF framework cleanup (removed single widget edit mode, min size re…

…strictions, code cleanup, versions upgrade, adapting to angular-legacy-sortable)

Switch sortable repo

- switch Sortable repo

release v0.12.0

Add option that the type of the widget and title can be changed throu…

…gh Dashboard API.

Increase version to 0.15.5.

Fix for save triggering twice when moving widgets.

Change track by $index to track by widget id for adf-widget.
Version changed to 0.15.3.

Added wid when creating widget through dialog. Version increased to v…

… 0.15.2.