* start html head refactor
this is a bit of a doozy tbh and will probably take a while. the templates are very highly duplicated but not duplicated enough to be an easy little thing
oh well, so it goes.
* some easier html head ones
* add chat, html_head, sign_up_failed_ref, sign_up, submit
* CSP: put it in const.py instead of this weird thing we did before
* fix syntax error
* better call the actual macros
* fix prev commit
* import into settings2
* fix prev commit
* set CSP properly if localhost
* some title fixes i think
* login page
* fix prev commit
* hacky thing to get titles to work i think
* {{stylesheets()}}
* fix prev commit
* title stuff
* cries uncontrollably
* submission fixes i think
* fix prev commit i think
* submission fixes ekfjdhfkdjf
* submission fixes 4
* this may fix submissions idk tbh
* default template: make it a little better on post pages
* default template: some efficiency