Fixing crash on editing notes node

- EditWindow is a popup window, hence it's visual tree doesn't contain
DynamoView class. Thus the Owner is set as null and later OnClick()
crashes while calling ExecuteCommand on owner.
- Fixed by locating the DynamoView object from
Application.Current.MainWindow.
Merged UpdateGraphAsyncTask/EngineController for immediate review
Fixing crash while launching Package Manager website from Manage Package Manager UI.
Fixes crash while copy paste of custom node.

- Nickname is not serialized while copying custom node and while pasting
it was trying to get it and hence crashed.
- Fixes http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-4235
Cleanup of ignored language test cases
more cleanup
Fix gc issue for static property
Not set value to FX register
Add regression test case
Fix #2199, aka MAGN-4271
Merge pull request #2205 from sharadkjaiswal/MAGN-4235

Fixes crash while copy paste of custom node.
Synced LibG DLLs to latest
Merge pull request #2224 from pboyer/PackageManagerReinstallFix

Fix #2199, aka MAGN-4271
Merge pull request #2215 from aparajit-pratap/dynamoCurrent

Cleanup of ignored language test cases
Merge pull request #2191 from sharadkjaiswal/MAGN-4174

Fixing crash on editing notes node
Merge pull request #2202 from Benglin/UpdateGraphAsyncTask

Implemented UpdateGraphAsyncTask, updated EngineController
Merge pull request #2222 from ke-yu/fix_staticproperty_gc

Fix memory management issue in static property
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Bloodstone