DUI: Fix cursor appearing for start of search

Cursor should blink before "Search" label.
![image](https://cloud.githubusercontent.com/assets/8158404/4897416/0eb95ff6-6406-11e4-9ccf-98511191a9cb.png)

Reviewers
@Benglin ,@vmoyseenko, please take a look.
Link to YouTrack:
[MAGN-5271](http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-5271) DUI: Fix cursor appearing for start of search