Coding issue: Done button graphic

[stijn-dejongh]

On branch refactor/mvp_pattern.

Issue when adding a graphic to the Done button in ActivityView.
When clicked and refreshed, the button text dissapears.
This issue does not occur when there is not graphic attached to the button.
Unit test indicates the text is there, but is simply not visible.
Bug only occurs on done button, edit/save and delete buttons are unaffected.