Embeddable event widget, first cut.

embeddable event widget. still need to tweak styles and add in js logic to show/hide code. also need to test the attend and amp links

first cut at an event widget. couldn't get actual attend/amp links working from off-site yet, so for now we just point to the event

user master schema. i seem to have local migrations sneaking in
Merge pull request #190 from southpolesteve/widget

Widget