[CLEANUP] Remove obsolete code
[BUGFIX] Re-Enable core caches when higher run level is requested

During compile time run level core caches are disabled,
which made flush caches without --force ineffective.

Now caches are re-enabled when a higher run level was
requested, but compile run level was executed before.
[BUGFIX] Fix Cache Service Test
[BUGFIX] Fix full run level commands that need $LANG