Updated todo.
Fixed server error on /media/

Not at all sure that I'm using named-URL namespacing right. Seems like
there should be some scoping to it that I'm not getting.
"Next" persists through failed login attempts.
Fixed responsive header bug.

Woops, I took out something that looked useless, but was part of the responsive
behavior. Added it back with explanatory comment.
Updated todo.
Bumped version.
Merge branch 'release/0.5.5' into develop