LDAP Wizard: move raw login filter field from advanced tab to login filter tab for consistency
LDAP Wizard: proper behaviour for raw filter input. remember the editing mode and compose filter only when desired.
LDAP Wizard: clear the cache on save so changes have immediate effect
Merge pull request #5955 from owncloud/fix5863

LDAP Wizard: Add raw login filter to corresponding tab for consistency, fix behaviour on raw filter input