Display a map showing features mentioned in a diary entry

Scan diary entry body for osm feature refs, and display map
browse.js can now handle a list of features.
Allow commenting on notes from the browse page
Use Leaflet.markercluster to cluster note markers
basic form refactor.
basic styling for forms.
Contributer terms form buttons

I moved the buttons from the right side to the left,
made them line up a bit better and change the decline
button color.
Structure the contributor terms form more.
Fieldset margin for contributer terms

Add a margin under fieldset tags that matches the
margin under p tags.
Standardize contributor terms form margins

Make more bottom margins match the p tag bottom margins
Remove tables from login.html.erb
Standardize forms between login and new
Begin removing tables
sizes
remove more table remnants
home location
account form
remove table from diary edit
make diary edit more of a standard-form
remove tables from lost_password form
remove tables from trace upload form