[skel] update pylint instruction in default setup.py

[views] fix foaf view for CWUser

[book] minor update about windmill + reformat

[c-c shell/upgrade] raise ExecutionError when traceback is not relevant

[windmill] initialize windmill registry if not already existing (possible error case in dev)

[req] build_url: detect None values in arguments and raise ValueError

[doc/book] make it colorful

[doc/book] complete section on authentication plugins

[publisher] add session id when logging published path

[entity, url] we should not set base_url in kwargs when actually unset

[test] we actually still need the set_option on base-url for multi-sources (eg repo) configuration

[test] fix broken tests and minor cleanups

[test] add some fake cubes necessary for test so we don't depend on the actual forge cube

[doc/book] begin an howto write auth plugins chapter

[dbapi] fix typo