Basic embed page setup

Still need to add style -- font-face and so on, and position elements
above map.
before-map

Styled the portion above the map
minor css fixes

Just pushing changes as I finish the working day
Merge remote-tracking branch 'martinburch/feature_embed' into feature_embed

Conflicts:
	embed.html

Merged martinburch/feature_embed into this branch. Kept 'embed.js' because it has code special to the embed (e.g., making the map minimal). If it is possible to make it so that certain Javascript code activates ONLY for 'embed.html', then 'embed.js' won't be necessary.