Merge pull request #1 from ChrisWesterfield/master

bug #90871
Merge pull request #2 from ChrisWesterfield/master

updates
CON-197
removed old "lastschrift" interface for xt_banktransfer and replaced it with sepa (lscore) completly as from the 1. of August on, no "lastschrift" banktransfer is allowed anymore
removed fields that point twords the old banktransfer.