Basic implementation of Nearby Pages page.

Links, map on the side forthcoming.
Merge remote-tracking branch 'upstream/master' into nearby_pages
Added "Nearby Pages" page.

Added a view that gives a map and list of the thirty pages nearest
to the user's position (from geolocation). Fixes #534
Lil' nonprofit mention at bottom.

We need to rework all this, but this is good enough for right now.
Don't fire signal if no userprofile.
+ django 1.4.8
Center map a bit better in cover.
Fix iOS searching.

display:none on a submit input on iOS will cause the form to *not*
submit if there is more than one input field in the form.  Using the
autocomplete thing causes a fake input field to be created, so we need
to do visibility:hidden here instead.
5 or more polys for zoom filtering on map.
Trying out some new includepage CSS.
Margin left on included pages
Only clear left on headings on frnt pg
Better image floated bottom margin
Use CC0 for new contribs until have contributor agreement.
Searching on map + population via OSM.

Not done, but saving work.  Will rebase out Django 1.5 changes
Better OSM lookup.
Fixes #629
move_to_region() + tests
Merge branch 'hub' into hub_fabric_deploy_needed
Another move_to_region() test.