StandardPanel with Queries only doesn't have a header

#### Purpose

For some cases `StandardPanel` doesn't have header. "More" button is available but no more methods panel has.
![image](https://cloud.githubusercontent.com/assets/8158551/4850619/3daaca8c-606b-11e4-9991-c6d9438b1945.png)

#### Additional references

For more information how to reproduce go to [MAGN-5243](http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-5243).

#### Reviewers

@aosyatnik, @Benglin, please, take a look.