Revert "remove database from Django app"

This reverts commit 983ee7e1318e5b72057ae8e317ba8ef6d8e46bff.
Revert "remove locate view functionality - to be completed"

This reverts commit 956cf44e8408e81b4cf6b3cb1779e4fa7b15afa3.
Revert "add How To page and remove table search functionality"

This reverts commit 46de02354df4c76064e7bfe3330bfd25ed0475da.

Conflicts:
	censusreporter/apps/census/templates/how_to.html