Fix erroneous email when folders are shared

Add backtick for trash app to prevent pg errors

create new version if the same file is uploaded again over the web interface

Return unknown freespace if the free_space call failed

Fixes #2312

itemType is never "dir"; it's either "file" or "folder".

listen to the pre delete hook in the sharing app [master]

don't add share action to the Shared folder

Fix OC_Files::get() to not return the first character of the filename
if only one file is requested.

Fixing mssql utf8 and insert empty string master

Fixing windows file mapper master

Preserve Debug flag accross config writes

LDAP: compatibility with Novell eDirectory UUID

disable MDB2_PORTABILITY_EMPTY_TO_NULL for mssql to allow insert of empty string to no null fields

write error message to log file in case insert to file cache failed - took hours to find that the insert failed :-(

fixing copy operation on mapper

Fix #2080 and fix #2141

Fix variable for mounting for all users, fix #357