Add basic markers to the map for the applications on the page

TODO: get the full list, not a paginated one
Allow search_params to be overriden and use per_page from Application
Show all applications Sphinx can return on maps
Limit search distance to 3 miles so that it all fits on the default zoom level
Limit search distance to 3 miles so that it all fits on the default zoom level
Add basic map popups to the markers on the map
Create marker content using underscore templates
Merge branch 'issues/14-map-popups' into hampshire
Create theme version of show template, split out partials
Use config to switch comments and alerts off
Add config and partial for social media sharing
Fix bug - authority.applications_per_week breaks in Postgres
Remove references to scrapers from authority view, calculate received applications per week
Fix config override bug