Fixes Archlinux variant.

Signed-off-by: Kevin Albertson <kevin.albertson@mongodb.com>

Signed-off-by: Kevin Albertson <kevin.albertson@mongodb.com>

Otherwise the produced _static files differ from different versions of
Sphinx. To include built docs in the dist, we need to explicitly list
the static files.

Temporarily remove dependency of libmongocrypt until we can test with
new enough Fedora in evergreen. Otherwise build_snapshot_rpm.sh fails
to install the dependency 'cmake(mongocrypt)'

Signed-off-by: Kevin Albertson <kevin.albertson@mongodb.com>

This reverts commit 6f5f7fe4.

eebc738e accidentally removed ENABLE_CLIENT_SIDE_ENCRYPTION=OFF

This change is based on work initially done by @eldruin in PR #589.
Thanks to him for his contribution.

- removes custom theme in favor of vendored "readable" theme
- moves remaining doc source files from gh-pages into master
- CDRIVER-3445 add NPS survey
- CDRIVER-3463 update google analytics
- CDRIVER-2833 fix the search on libmongoc/libbson sites, remove from
home page