Update to 5.0.11

Changelog:
Version 5.0.11 Sep 10th 2013

    Fixing upload in shared folders with create privileges
    Making ldap more robust in certain situations
    Handing quota violation earlier to make the desktop clients more robust
    Several quota fixes
    Fix issues with certain file names like 0 or false
    Disable smb in files_External on windows servers
    Enable user to decrypt files again after encryption app was disabled
    Improved Encryption messages
    Add a searchByMime call to API
    Fix multiselects for Firefox on Mac in groups management
    Reduce the number of ldap connections
    Show a ���password incorrect��� notice when used shared password is wrong
    Switch to the completely new Google Drive SDK.
    Scanner: additional tests for reusing etags during scanning
    Fix accessing files that are newly created by setting the right mime type
    Several Calendar bugfixes
    Fixed ���Show on Map��� in Contacts
    A lof of Contacts fixes
    Several ���Tasks��� fixes

(ryoon)