[Bug 1015334] Many improvements to location editing

Including, but not limited to:
* Convert js whitespace to tabs.
* Fix js breaking when profile has no lat/lng.
* Search result display improved.
* Shadow hints applied.
* Marker moves after searching.
* Fit map search to mobile layouts, and improved aesthetics.
* Pressing enter on search takes the first result.
* Hide lat/lng fields on edit profile page.
* Remove unused parts of profile edit mapbox code.
* Add pacifier for search while ajax results are pending.
* Displaying bounds is optional and off by default.
* Tile layer uses mozilla.org tile set.
* Improve zooming substantially (any region which crosses the prime meridian will freak out, but this is map box’s fault for providing bad bounding boxes, not ours)
* Don't display box when there are no search results.
* Fix loader gif race condition.
* Dragging pin auto-centers on city.
* Make entry of region/city optional.
* Require entering country at minimum.
* Handle display if lat/lng is missing on profile.

Much credit to @wraybowling for UI and JS.
Agreed, this is fixed now. We wanted to use different tiles for the edit page vs the ones we made to show the user location clusters, so we actually need two mapbox IDs in settings.