[2.3] [Re-build] Fix superbox selects in toolbars

There are major UI glitches with superboxselect inputs when they are used in toolbars, this PR fixes them

before
![bildschirmfoto 2014-10-01 um 16 29 35](https://cloud.githubusercontent.com/assets/445501/4476881/9b5b8008-4979-11e4-9b3e-9f1dfe45869f.png)

after
![bildschirmfoto 2014-10-01 um 16 29 17](https://cloud.githubusercontent.com/assets/445501/4476885/9f4226a4-4979-11e4-8e11-d440b2e43a04.png)