Move logging directory into AppData for application

Move the logging folder into the same location as the pref file to
support deployments without write access to the binary location
Sort package manager search results by name, maintainer, votes, downloads
Add files to a package in the publish package dialog
Sort packages by most recent update, by default sort packages by most recent update in search
Small tweaks to speed up package manager search
Use more significant figures for metric conversions, fix for Issue #585
Merge branch '0.6.2' of https://github.com/ikeough/Dynamo into 0.6.2
No empty CBN
Empty code block node deletion with undo
Merge pull request #794 from ke-yu/ChocoButter

Fix MAGN-786: N2C should exclude the watch nodes
Setting of preview variable
Return an empty list instead of an exception. The ASTBuilder will also
need to handle this by ignoring the CBN altogether if an error is
flagged
Merge pull request #795 from ke-yu/ChocoButter

Fix spelling error (NodeModel.IsConvertiable -> NodeModel.IsConvertible)
Merge pull request #796 from junmendoza/ChocoButter

CBN syntax error crash fix.
1. Fix: MAGN-774 Crash after convert to custom node and undo
2. Enhanced "NodeCollapser.Collapse" method to perform undo recording while converting nodes
3. Added "Dynamo.Tests.CustomNodes.CanCollapseAndUndoRedo" method to verify the fix
4. Implemented "DynamoUnitTest.VerifyModelExistence" helper method to check models' existence
5. Exposed "WorkspaceModel.UndoRecorder" property to return instance of the UndoRedoRecorder
Merge pull request #797 from ke-yu/ChocoButter

Generate short variable names for nodes to code
Adding test cases generated from defects.
Merge pull request #798 from riteshchandawar/ChocoButter

Added test cases generated from defects.
Merge pull request #799 from Benglin/0.6.2

Fix: MAGN-774 Crash after convert to custom node and undo
Merge pull request #801 from ambarish-prakash/CBNUndo

CBN changes