website-update: Don't define SITEDIR in the script.

Prefer setting WorkingDirectory.

website-update: Remove lockdir code.

Now that we're running as a systemd service, that will make sure
only one update runs at a time.

website-update: Stop updating the database.

Move this to a separate service.

Update karen's Bio

Changes were given to me by karen over the phone just now. :)

Leadership and other bio updates, most notably Allison Randal.

Allison Randal joined Conservancy's board!

Update filing date for FY 2018 tax return

Update filing date due to the 6 month extension.

Add Bdale Garbee to board

Bdale joined the board in 2018 but was never added to the web site.

Filings: audit deadline extension was granted a while ago.

Update text to indicate we have that extended deadline.

static.views: Deduplicate code.

The primary goal here is to get templates rendered more like our "regular"
templates, by using more of the standard tools to do so rather than roll our
own.

* Use TemplateResponse. This requires less boilerplate and ensures the
rendering runs through our local context processors.
* Use the existing definition of fundgoal_lookup.

templates: Finer-grained split of fundraiser header display.

Always show the header if a fundraising goal is active.
Only show the progressbar if there's money in it.

manage.py: New file.

To bring the project in line with modern Django apps.