Remove object class related methods while importing.
 - Fixes http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-2112
 - methods ToString(), GetHashCode(), Equals(), GetType() are removed from import.
Defect fix MAGN-2262
Fix Optimize.ds loading issue
Disabling Packages, Libraries, Settings, Samples Menus, and node to code option
Test case for defect MAGN-2262
Merge pull request #1319 from sharadkjaiswal/MigrationTests

Remove object class related methods while importing.
Merge pull request #1320 from Randy-Ma/ChocoButter-2Become1

Hide functions whose names start with double underscores
Merge pull request #1322 from aparajit-pratap/FixedTestCases

Defect fix MAGN-2262
Merge pull request #1323 from ke-yu/fix_magn2371

Fix MAGN2371: Fix Optimize.ds loading issue
Improve the implementation and use of the IsVisibleInDynamoLibrary attribute
Merge branch 'ChocoButter-2Become1' of github.com:DynamoDS/Dynamo into ChocoButter-2Become1