Added Test Cases those were generated from Defects.

There were some defect I verified in the past, now adding Automation Tests for few of them.
Also added one Level Tests, which test Level Creation using all available Level Creation Nodes.

<h4>Reviewer</h4>
- [ ] @ikeough 

<h4>Need Merge to</h4>
- [ ] Revit2015

All newly added tests are passing on latest Master.
![image](https://cloud.githubusercontent.com/assets/5109531/4879086/03e3137c-6322-11e4-8210-7ca8029a66b9.png)