tests: add note about code that is only there for Zope < 2.13
ZODB Components: Ignore erp5.* dynamic modules when statically checking syntax through Pylint.
XMLMatrix: update some docstrings
Budget consumption report: support filtering on multiple budget types & budget models
add a CSS entry for stat line.
General Ledger: support cases where accounts miss a mirror section or a payment
rewrite memcache_client.py monkey patch based on python_memcached-1.53.