Add organization type to search

[ondrae]

http://codeforamerica.org/api/organizations?q=Brigade should return a list of all the Brigades.

It is easy to do http://codeforamerica.org/api/organizations?type=Brigade and get the list, yet search is search.

Files

app.py, /migrations/versions

Tasks

• Add other organization fields, such as type to the search index.
• Write a migration for the trigger update, same as when we updated the projects search index.