[debug] syntax highlight SQL and RQL debug output This prevent DBG_RQL and DBG_SQL output to looks like a gigantic blob of white text. Do this only if we detect that we are in a tty and that pygments is installed. Closes #17222885

[logging] send logs by default to stdout Following the move to have commands only working on foreground sending logs to a file by default doesn't make much more sens anymore so send them to stdout by default and add a new option to send them to a file if needed

[cubicweb-ctl] backport --dbglevel option of pyramid to all instance commands Closes #17219653

[cubicweb-ctl] backport --loglevel option of pyramid to all instance commands

[cubicweb-ctl/fix] correctly get exception traceback_ for pdb.post_mortem In python 3 the behavior of sys.exc_info had a very subtle change: - in python 2 you can call if whenever you want after a try/except statement and you'll get information about this last raise - ipython 3, once you get out of try/except, sys.exc_info is cleaned and you'll get (None, None, None) Hardened the test to avoid this error from happening again.

Document mercurial configuration for contributing * how to use master/review repositories * how to send the "Available at" command in patchbomb emails * how to add the "cubicweb" flag in patchbomb emails * how to use our "jenkins" mercurial extension Closes #17243538