If the etag of a directory hasn't changed, the content for the csync
tree can be restored from database. The code doing that is now optimized
so that this does not take so long any more.
Imagine we have a file:
foo/bar/moo
if we do mv 'foo' 'foo2' and that we issue a MOVE on the server
and will update the entry 'foo' in the database with the new etag
If we write the etag of foo but not the etag of the sub item, when
we read from db on the next sync, we will miss them and beleive they
have been removed on the server
Should change error message such as
"CSync failed to connect through a proxy. 500 Internal Server Error"
To:
"CSync processing step update failed. 500 Internal Server Error"
