removed not needed interfaces

git-svn-id: http://svn.miranda-ng.org/main/trunk@3494 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
removed not needed interfaces
added filter

git-svn-id: http://svn.miranda-ng.org/main/trunk@3495 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c