initial commit
Most basic web UI
Sign in/out pages
Provide CSRF protection for the signin form
Style some things nice (with bootstrap)
Use navbar on index page
Add page for editing things
Update Glance & Description fields in thing form

Also include some Bootstrap styles I looked at but didn't use, in case
we use them later.
Use full width of viewport & line up form header
Add Pronouns selector
Mock up some further buttons & an actions list
Add table page
Nice table editor
Use a more JSON-ish table editor
Finish table editor
Show things' relationships
Thing palette sidebar & animate drag targets
Show owners in a thing's relations
Show access lists in a thing's relations
go fmt