made base.html have container and row.  began moving sightings stuff so that it is slightly off center on non-mobile views
made sighting list full page scroll and simplified overall html and css structure somewhat by removing many elements with class full-height
simplified nearby_sightings view html and update knockout viewmodel
add sighting view closer to working with new styling
Fixed layout and improved performance on add sighting view
Added beerfinder/media to .gitignore
better html for beer_list.html, beer_detail.html, add_beer.html
Tweaked edit_profile.html for simpler html
Added a sticky bottom footer