The world's worst group and acl UI

This is a bare minimum. And I'm not terribly confident in the code (I
haven't double-checked everything carefully yet). But, I think it's
enough to get things going!
fix copypaste error
whoops, forgot to add templates
Whoops, forgot the zero-rule case.

So hacky :(
check for last user in rule
remove dumb console.log from debugging
group deletion
Merge pull request #133 from eve-val/group-crud

The world's worst group and acl UI