Merge pull request #2 from gretchiemoran/master

PRD-4236, PRD-4224 - Develop code and XUL definition for MongoDB dialog
[PDI-9272] MongoDB Input/Output transformation step UI improvements. Also added some missing dependencies so that unit tests can run properly.
Merge pull request #3 from m-a-hall/master

[PDI-9272] MongoDB Input/Output transformation step UI improvements
Merge remote-tracking branch 'upstream/master'