MDL-44425 Merge English strings from the en_fix language pack
Merge branch 'MDL-44425-en_fix_26' of git://github.com/mudrd8mz/moodle into MOODLE_26_STABLE
Revert "MDL-43852 Filters Fixed naked-OR conditions."

While the patch worked as intended, we discovered some other concerns
about use of this setting in testing.

This reverts commit edf55404ff0178d11cab1e13cc09e286da49eea2.