Sample cleanup

<h4>Summary</h4>
As we have removed all old Sample (.dyn) files from **...\Dynamo\doc\distrib\Samples**, there were so many Samples test failing due to their path referenced to old Samples folder.

<h4>Solution</h4>
I have copy pasted those old dyn to this folder **...\Dynamo\test\System\revit\Samples**, and changed their path in respective tests. I have also added more verification to these entire Samples which was missing in old Test cases.

I have marked few tests as **Ignored** and added TODO with defect ID. I need to discuss with Ian or Zach on those tests.

**Ignored Test Cases**
- CreatePointEndSample
- CreatePointSample
- RefGridSlidersEndSample
- DivideSelectedCurveEndSample
- FormFromCurveSelectionListSample
- FormFromCurveSelectionSample
- GraphFunctionAndConnectPointsSample
- ScalableGraphFunctionSample
- GraphFunctionSample
I- nstParam2MassesDrivingEachOtherSample
- ConnectTwoPointArrays
- CreateSineWaveFromSelectedCurve

**Removed** test cases as those scenarios were covered in other tests.
- Attractor_2
- AdaptiveComponentPlacement

Defect to be address after merging this PR (http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-4041)

Few tests need more verification which I have already added in above defect.
<h4>Reviewer</h4>
@ikeough, @Randy-Ma, @lukechurch

**Test Cases Status**
![image](https://cloud.githubusercontent.com/assets/5109531/3731060/088ea7f0-16e3-11e4-812f-8e8ad5e093cc.png)

@ikeough, @lukechurch 

For cases like this, shall we mark them as to be ignored or just delete them? My concern is that if we remove them, then we may lose track of them in the future.