See merge request sroracle/apkvitrine!2

Replace temporary logo with official images.

See merge request sroracle/apkvitrine!1

The builders page has not been tested.

This makes source repository URL links more functional in edge cases
where STARTDIR != REPO/PKGNAME

It must have a hostname otherwise it will be ignored. We will at least
assume HTTP_HOST is present instead of trying to fall back on
SERVER_NAME and SERVER_PORT for simplicity sake. NetSurf also has the
peculiar behavior that a protocol-relative BASE HREF URI is rewritten to
be HTTP even if the document URI is HTTPS, but whatever.

Makes it easier to add more static files in the future

e.g. "Found 25 packages. Showing the first 25." which then has a second
page with no content ("No results...")