Add earthquake map icons
Front end update
- Clickable table rows to move map
- Relative time (e.g. 5 minutes ago)
- Better AJAX
- Made controller able to also filter on intensity
- Better handling of when there are no results
Add images
Front end updates
- Map markers
- Table style
Merge branch 'github/master'

Conflicts:
	app/controllers/seismic_index_controller.rb
	app/views/seismic_index/index.html.erb
	config/routes.rb
Merge branch 'chris'