Add support for defining environment varibles to dump the Language scripts
into .ds file.This is one time activity based on which Lanugage tests
needs to be imported to CBN.
Add a flag to Dump Lanugage scripts into .ds files
Files generaetd will be used by CBNLanguageComparison testframework
to run tests in lanugage and then dump them to CBN for comparison
Change type of value dumpDS from string to bool
to match the flag type
Fix the issue that the run button can not be disabled
Remove extra classnode parameter from ImportProcedure
Update test case
Make the relative path be real relative
Update condition to make the logic clearer
Add test case MakeRelativePath06
Refactor hidden testing for imported procedure
Merge pull request #2190 from ke-yu/fix_library_testcase

Fix broken library testcases
Improve code quality for boolean check
Merge pull request #2201 from monikaprabhu/tBranch

Flag for dumpDS required to dump Language Scripts into .ds file
Merge pull request #2188 from Randy-Ma/master

Fix the issue that the run button can not be disabled
Fixed MAGN-4230 and 4233
Merge branch 'master' into Revit2015
Merge branch 'master' of github.com:DynamoDS/Dynamo
Merge branch 'master' into Revit2015