[test] fixes to make tests pass with recent lxml lxml (on jessie at least, ie. 3.4.0) does not remove endlines anymore.

[server] Remove useless 'is None' checks 'pb' is never none since 3386fd89c914 when support for the 'APYCOT_ROOT' env var was removed.

[security] check attributes: dispatch on the "add" action if entity was just created cw_set on a just-created entity (i.e. created in the same transaction) should behave the same as setting the attribute directly on creation: check the 'add' permissions, not 'update'. Closes #4740310.

[doc] Add BigInt to the list of built-in types

[devtools] call turn_repo_off in tearDown (closes #4673491) lets it catch leaked sessions even when running a single test

[book] typos / clarifications in create-instance section Clarify that cubicweb-ctl upgrade needs to be run whenever cubicweb or a cube is upgraded. Related to #2632425.

[repository] don't mangle the stack trace on exception

[pkg] Make twisted recommended only It's not necessary when using wsgi or pyramid. Closes #4639508

[devtools] Use the pause_trace context manager instead of pause_tracing/resume_tracing The later were deprecated in logilab-common 0.63.1

[serverctl] rename remove_cube to drop_cube (closes #4545093) For the sake of consistency, since commands are currently named: - add_{cube,entity,attribute,relation} - drop_{entity,attribute,relation} - remove_cube

[wsgi] add tornado http server

[wsgi] add message about the active interface Similarly to what done in "stdlib".

[cwctl] rewrite wsgi method choices This will help devs to add new choices by adding their callback to WSGI_CHOICES. Note: ``options`` becomes a property because ``wsgichoices()`` should be evaluated at the last-minute.

[skeleton/debian] use dh_python2 instead of dh_pysupport for new cubes The former is deprecated.

[web] Add source for jquery.qtip.js Downloaded from https://github.com/Craga89/qTip1/raw/master/1.0.0-rc3/jquery.qtip-1.0.0-rc3.js Related to #3851121.