Add a basic script to "push" deploy

Currently updates are published by the "conservancy-www-update.sh" that does a
"pull" deploy with a 5-minutely job that runs on the web server. This doesn't
run `migrate`, `collectstatic` or restart the application, so certain types of
changes don't take effect, and even template changes often don't due to caching
template loader.

This script allows you to deploy more significant updates on-demand, but
requires SSH access.

podjango: Use `or_` instead of lambda

Easier to read.

Remove unused ccs-upload feature

Use the Source uploads now go to a NextCloud anonymous upload.

Move /cast/ to /cast/the-corresponding-source/

This makes room for addition of other podcasts later.

Remove outdated copy of Apache config

This isn't being deployed from the repository and is a couple of servers out of date.

copyleft-compliance: Fix title on Principles page

The changed text appears to be what goes in <title/> and thus didn't
help the reader much before this change. In particular, I suspect
that the prior <title/> did not help our search engine ranking much
for searches on this topic. So hopefully this change helps a bit.

Rework text to note the match has been made

Rewrite this text so that it indicates that we made the match. Note
that the numbers are *hard coded* and as such need
updating (particularly the $1,942).

Display donation bar, noting it's results, for 1 week after end

The fundgoal section is now always included, but an if statement now
wraps the entire (partial) file, which will only generate any content
if it's not more than one week after the fundraiser has ended.

Add an else that indicates these are results if it is past the end of
the fundraiser.

Calculate hours when only one day is left.

This {% widthratio %} trick is something I found online that didn't
require a django-math module to work, but I would have rather written
something that:

(b) Could have a different message when there is only one hour
left: “less than one hour left” (i.e., tested if hours == 1)

(c) Will say “hour” instead of “hours” when there is exactly 1 hour
left.

link to judge's decision in Vizio summary judgment; fix formatting

Various issues with formatting, incluidng missing </a>'s and
incorrect <ul> <li> <ul> stuff. I think this should make
presentation a bit better on website.

update travel policy policies.git 2023-12-13

commit b78549cbc630463374e2bd50db187eedda9b75bd

Switch CCS upload, copyright assignment, FOSSY and podcast components to use path()

This is the newer approach to URL routing in Django.

Add the conservancy-www-db.path Systemd file

This runs the SQL update when the relevant file is modified.

Add linkchecker Systemd service and timer

Doesn't yet email report of errors.

Remove nesting of hidden sections on sustainer page

This makes the page more similar to how it has worked in previous years.