feat(repo): add git commit template

added a git commit template to use.
please run `git config commit.template ./.gitmessage` once to add it to this project.
Merge pull request #86 from stoe/feature/committemplate

committemplate
Adding functionality per @raminbp on PR #87, since he didn't have access to Architect.

I also cleaned up the preview/filter feature on the Events grid so that the grid's selection model allowed for multiselect.
Merge pull request #88 from arthurakay/master

Adding functionality per @raminbp on PR #87