Small cleanups

Stop trying to dedent lines, this belongs in a wholly different place and is buggy. Also stop throwing NotImplemented for Language service, just return null like a civilized implementation.
Merge pull request #22 from vosen/master

Small cleanups
Take dependency on MPF.
Add rust project and rust app template

This is just a starting point. All it does amount to adding template to the "New Project" window and recognizing .rsproj files. Project still can't be build, items can't be added, etc.
Merge pull request #23 from vosen/master

Recognize rust projects