default to an empty string user-agent so no exception if blank.
give search engines what the user sees if we don't have a prerendered version
anchor links work.

also, wider min-width for body to allow room for icons in right margin whitespace.
Tooltip for permalinks orange-on-white.
Merge branch 'master' of github.com:total-impact/total-impact-webapp
catch errors from bots who search for urls with unicode chars
Merge branch 'master' into importers

Conflicts:
	totalimpactwebapp/static/dist/ImpactStory.js