Starting to add widget position management
Display widgets based on portfolio disposition
Change widget column when changing portfolio disposition
Add button on widget to change his column
Display icon for change column button
Use a designController
Changing portfolio disposition is persisted in db and portfolio is well updated
Updating widget in db only when portfolio disposition is changed, and at the same time not with one request per widget
Don't display change colum button on widget if widget is editing or new
Change condition to make it work when value is 0
Merge pull request #9 from iCAPLyon1/widget_disposition

Widget disposition