Let's not push unless we're also pushed up to the code.librehq.com repo.

 * Check that we're committed up
 * Check that we're pushed up to repo
 * Check for main branch

Note that Pep8 says line lengths of 79 to 99 chars are acceptable.

We couldn't figure out how to config server.serve with the `pelican -d` setting.  So we tried just
running pelican via `os.system` but that lost us live reloading.  So go back to live reloading.

Note that this costs us '-e PELICAN_BINSERVE=true, which will slow running of tests.

The failed line, for reference:

```
os.system("pelican -rd --listen -e PELICAN_BINSERVE=true")
```

This was only in the template because of a wordpress quirk --- it let you add css via the admin
interface.  That css was just injected into the html.

 * Put them at the location our old site had them at so we can continue
   to serve existing subscribers.

 * Add some testing code to fire off a server as needed

 * Make feeds optional in pelicanconf

It turns out that 'site' is a standard module, and if you are using
pytest and try to `import site` python gets confused about which `site`
you mean.  We could untangle that via some sys.path hacking or import
module munging, or maybe just symlinks, but this is cleanest.