Big commit.

Fixed:
- Removed some console.logs that were left in for some reason.
- External link checking in Integrity Checker always being off
- Something else I forgot

Added:
- Yahoo Geocoder (can't actually switch it through the admin yet)

Changed:
- Switched some language in the admin.
- Namespaced all the JavaScript variables used in local scripts in the admin so that we're always using BigTree. (or in the case of pages, BigTreePages). Should prevent issues now that we allow loading of custom JS into the global space of BigTree.