Cache: simplify scanner logic a bit when handeling with unknown folder sizes
Cache: reuse known folder sizes when doing a shallow scan
Cache: actually use parameter
Cache: don't create a new etag when the mtime hasn't changed
Cache: also preserve etags for files
fixing syntax error
Cache: fix scanner trying to use existing data when file isn't in cache
Merge pull request #1616 from owncloud/cache_fixes_rebase

Cache: reuse known folder sizes when doing a shallow scan - rebase