Add footer

1. Add fixed footer with a Feedback & Support button that opens a modal dialogue users can submit feedback from.
2. Removed the Feedback form from the Help page (which is not in the Feedback modal) and provided contact information (an email address) for Atmosphere support.
3. Remove redundant header title from Images, Provider and Help pages.
4. Renamed "Terminate" to "Delete" for instance and volume.  Will start using that word in the app instead of Terminate.