fixes #2482
cleanup
tests added
fix tests
skipping databases
skipping fix
skip unless wrong import
fuzzy int added
Merge branch 'develop' into fix-2482
Merge branch 'develop' into fix-2482
#2516 : add default children for default_plugins of placeholders configured in settings.py.
fix querie numbers
Merge branch 'develop' into fix-2482

Conflicts:
	cms/middleware/toolbar.py
	cms/tests/toolbar.py
changed color to red and fixed tests
other querie numbers on server
upped queries
test tree view queries and optimize them as well
increased allowed queries
increased queries
fixed some python3 problems