Update outline.md

Added a few more thoughts
Create it-gitlab-pitch.md

This is the pitch I wrote for Dr. T to submit to IT.
Remove Gitolite talk.

GitLab hasn't had Gitolite [since 5.0](https://www.gitlab.com/2013/02/12/gitlab-without-gitolite/).
Merge remote-tracking branch 'nate/master'

Conflicts:
	outline.md