Add globs for templates in src/ and test/

## Add globs for HTML templates
This adds two globs, `templates` and `testTemplates`, so that watchers are aware of HTML templates in `src/` and `test/`. For apps that need to compile templates, this allows those build tasks to be added to the appropriate watch targets.

I'm not sure how exactly you would like me to test or verify this, if you have any suggestions I'd be glad to implement them.

@timmccall-wf