[#408] Remove organizations (publisher) code
[#471] Deprecate lib.helper link functions
[#471] Fix template for nav_named_link() removal
[#471] Fix template for subnav_link() removal
[#471] Use suggested function not direct link for clarity
[#471] Fix up nav_named_link() so now uses nav_link()
[#471] Fix subnav_named_route() to use nav_link()
[#471] Fix nav_link() when controller supplied as positional arg
Merge branch 'master' into 471-helper-clean-link-functions
[#471] Fix typo
[#543] Test resource proxy using httpretty
[#543] from .. import -> import ..
[#421] Adds tag index page
[#421] Redirects old tag redirect page to new package search with tag
[#543] Resolve speed issues in resource proxy test with httpretty.
The problem was that httpretty slows down requests and this slowed down set_resource_url.
[#543] Fix test_resource_proxy_non_existent
[#421] Fix for checking if we're in legacy templates mode for tests
[#636] Fix deleted members having rights
[#636] Check we set state to active
[#649] Rename default_package_schema() -> _base_package_schema()

Also add a docstring.

This schema seems to be a base schema for other package schemas to be
based on, and a private helper function of schema.py. It's not used
outside of schema.py apart from by some tests that probably should not
be using it. The new name hopefully makes it clearer what the purpose of
this function is.