[py3k] make ldapfeed tests pass

[server] import filter from six.moves

[ldapfeed] port to ldap3 python-ldap has no python3 support. XXX I only checked that unittest_ldapfeed passes.

[server/test] str vs bytes

[server/test] list() around map and zip

[server/test] to fold, unicode → six.text_type

[server/test] delete test that doesn't make sense on python3 XXX if PY2?

[server/test] unicode → six.text_type

[server] unicode → six.text_type

[py3k] fix building rset description for INSERT queries

[datafeed] use explicit encode/decode instead of casting to str

[py3k] io.BytesIO

[py3k] get urllib foo from six.moves

[devtools] CubicWebTC._check_html may have to deal with unicode or bytes If called with template=None, CubicWebTC.view will not go through main-template, and return the unicode data from the view directly instead of encoded data.

[ext/test] fix test relying on repr(text)

[req] fix url_parse_qsl on py3 should be folded with previous conversion

[server/session] unicode → six.text_type

[web/test] str vs bytes

[web/ajax] fix AjaxController on python3

[web/test] str → bytes

[wsgi/test] use bytes instead of str for POST body

[devtools] 'dict_values' object does not support indexing

[multipart] decode form data before calling parse_qs in python 3 parse_qs eats and returns 'str' on both python versions.

[multipart] unicode → six.text_type