Project search tweaks

@laspluviosillas - Here is a change that adds Region to the Project Field Host Application, to the Project Detail Page, and to Project Search. Ultimately, I'd like to remove the location search on the home page and swap it for a region multi-select.

One issue I'm having is moving from having region as a Multiple Select on the Project Field Host Application, I'd like a 1-to-1 relationship between Region and a Project.

Also, some structure.sql changes snuck in. Do we simply include this file in git ignore?