testutils: add new relative url function
- Adds a new function in similar lines as make_url and make_surl called make_rurl which uses CFG_BASE_URL to return a relative URL.
WebSearch: fix regression test failures
- Opensearch meta descriptions are now properly using CFG_SITE_URL instead of CFG_BASE_URL.
- Fixes a problem while querying the database for unknown collection-names introduced after a pep8 fix as the function get_coll_normalized_name() now returns None, instead of having an IndexError exception, when no results are found.
- Amends the WebSearch regression tests to take new CFG_BASE_URL into account, replacing CFG_SITE_URL.
BibFormat: CFG_BASE_URL test fixes
- Amends missing formats as necessary to use CFG_BASE_URL as pointed out by regression tests.
WebComment: use CFG_BASE_URL in template
- Now WebComment templates uses CFG_BASE_URL in several places.