Power and grids link must be in footer

The "Powered by Type & Grids" link in the footer is required in the Free
version so I added the link back into their footer.
Merge pull request #3 from charlottechan19/keane-powergrid-fix

Merging into `keane-cleanup`. Merge from `keane-cleanup` into `master` to get this fix on the main branch.
Merge pull request #7 from charlottechan19/keane-cleanup

Keane cleanup