Multiple references to Oakland

[natebass]

There are still references to Oakland in the codebase that should be changed or removed.

Already Solved

• Treemap contains reference to Oakland's Open Data Platform Treemap page wrong data source #51
• Files in the root directory f69c74e

I did a previous cleanup that did not change any application files under the _src folder. This is because there is a lot of cruft and I didn't want to spend time renaming things that we wouldn't use.

We can continue to rename references as we see them, and focus on a thourough rename after we have deleted unnecessary files.