Style create a map pages, management pages
Merge branch 'master' of github.com:mtedeschi/OTM2 into topic/management-styling

Conflicts:
	opentreemap/treemap/css/sass/partials/_admin.scss
	opentreemap/treemap/templates/base.html
Create a map styling, pricing and progress bar
Create instance form styling
Add disabled block over step 4 on create instance
Merge branch 'master' of https://github.com/azavea/OTM2 into topic/management-styling
Merge pull request #590 from mtedeschi/topic/management-styling

Styling for Create Instance pages, minor styling