Ensure integer compare in Special:WantedCategories

For some reasons the qc_value from the query is returned as string, not
integer. The strict unequal comparision gives always true and that
results in unwanted "1 -> 1 member". Added a intval call.

Bug: T76910
Change-Id: I26e2718e418f35e2e10565c747a8f06f2bbb5ba3
Remove unneeded fields from query in Special:ListUsers

Since r72864 the fields numgroup and singlegroups are unused.

Change-Id: Ifc2f6c77ec54a9c9e72c4a7a4b8a9c8f9f90013a
Merge "Ensure integer compare in Special:WantedCategories"
Merge remote-tracking branch 'upstream/master'
Merge "Remove unneeded fields from query in Special:ListUsers"
Merge remote-tracking branch 'upstream/master'