Set 0 margins around ctkActionsWidget
Add ctkActionsWidget::sortColumn

See http://na-mic.org/Bug/view.php?id=1819
Resize ctkActionsWidget Details column

See http://na-mic.org/Bug/view.php?id=1819
Merge branch 'ctkactionswidget-expose-column-sorting'

* ctkactionswidget-expose-column-sorting:
  Resize ctkActionsWidget Details column
  Add ctkActionsWidget::sortColumn
  Set 0 margins around ctkActionsWidget