[pkg] Declare extras (optional) dependencies This is primary to extract "pyramid" dependencies out of install_requires as they are actually optional. Along the way, resurrect all things in __pkginfo__.__recommends__ which were not used at all and convert them into extra_requires. It appears that __depends__ and __recommends__ in __pkginfo__.py are not useful so drop them and inline dependencies as install_requires/extra_requires in setup function call. For pyramid tests to continue working, add respective dependencies to test-misc.txt requirements file.

^build$
^dist$
\.egg-info$
^.tox$
^.cache$
\.pyc$
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\~$
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^doc/book/en/apidoc$
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syntax: regexp
.*/data.*/database/.*
.*/data/ldapdb/.*
.*/data/uicache/
.*/data/libpython/cubicweb_.*/i18n/.*\.po
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
^doc/_build
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test-results.xml