owncloud/core — pull request #6751 by DeepDiver1975 (2014-01-13 14:30:17+00:00)
Title: First data validation before schema change added: duplicate keys on prim...

...ary/unique indexes

This holds the pure backend validation - nice frontend to be added

@karlitschek @bantu @bartv2 @icewind1991 @butonic