fix to changes in autocomplete insertion
minor fix
addressed review comments
Merge pull request #3017 from Benglin/Revit2015

Cross merging master changes into Revit 2015
Merge pull request #3018 from aparajit-pratap/fixAggressiveAutoComplete

Cross-merge from master for PR #3009
Merged few files for earlier review
Updated scheduler test cases for "QueryMirrorDataAsyncTask"