It confuses SQL databases..
BUGFIX Subtract should not add order by on subselect
github #166, github #171: don't write anything when LastEdited is the…
… only field to be changed (dramatically reduces DB access in some circumstances)
github #171: caching for table field lists to prevent repeated DB que…
github #171: more verbosity in DB logging for better diagnostics
github #171: cache group membership data to prevent repeated DB queries
Revert "github #171: cache group membership data to prevent repeated …
This reverts commit 3c49f19.
This optimisation introduced issues with group memberships not showing correctly in the CMS