[Launch] Remove scenario from MCT.launch

Fixes #283.

No changes to code, omitting contribution checklist.
Merge remote-tracking branch 'nasa/master'
Merge pull request #285 from JieD/master

[Platform] No login dialog window shown if only one user ID exists in DB & [Menu] Change “Revert to Committed” to “Revert to Saved"
Merge pull request #294 from JieD/master

Set paint rate (#286)