owncloud/core — pull request #10450 by georgehrke (2014-08-15 15:00:55+00:00)
Title: use owner's thumbnail cache if file is shared

fixes #10322

- Use the cached thumbnail of a file's owner instead of creating a new cached thumbnail for each user a file is shared with.
- some cleanups in \OC\Preview

please review @PVince81 @icewind1991