[447351] synchronization between Overview and Source page

Bug: 447351
Signed-off-by: Kaloyan Raev <kaloyan.r@zend.com>
[447351] synchronization between Overview and Source page

Null check added in WidgetModel.reloadEditableWidget()
The contribution to the sourcevalidation extension point is more
specific to avoid unnecessary triggers.

Bug: 447351
Signed-off-by: Kaloyan Raev <kaloyan.r@zend.com>
[447351] synchronization between Overview and Source page

Test added for WidgetModel.reloadEditableWidget()

Bug: 447351
Signed-off-by: Kaloyan Raev <kaloyan.r@zend.com>
Merge pull request #10 from kaloyan-raev/447351

[447351] synchronization between Overview and Source page