can post treatment now woo!
don't allow posting future appointments
claim thoughts, and a new table for the claim form

58 fields OMG but most of them come out of the database somewhere
added provider & office infos to config.py

also changed Rx.html to use the values in config.py instead of hardcoded values
made it possible to add carriers
took out the ugly h1 and put in topbar woo!

also delete a couple obsolete html files that I found while I was doing it
added notes for carriers.html so you can tell when there's a problem with form validation
rudimentary insurance plan support
moving code around
added claims modification and updates and payments oh my
added pushed balance calculation into database query

this way it's calculated correctly and any journal entry with money
will have a meaningful balance even if limit and suchlike are applied,
which is more than my half-assed bastard system before could do

of course, now I feel like I have a really expensive query, but we
will see how it does
cleaned up some todos

there were two obsolete todos
* timezone handling was fixed
* claims have been added to the model

pushed hours of operation into config.py instead of hardcoded into days.html
* still needs to have some programmatic setup in the database
* with holidays!