Z-Push backend to allow synchronisation of Roundcube contacts with ActiveSync enabled mobile devices

To use:

• Set up Z-Push as normal.
• Create the backend/roundcubecontacts directory
• Copy the file roundcubecontacts.php and config.php into the backend/roundcubecontacts folder.
• Open the main Z-Push config.php file in a text editor.
• Set BACKEND_PROVIDER to BackendRoundcubeContacts in the main config.php
• Update backend/roundcubecontacts/config.php and set Rouncube's DB and choose what mechanism you want to use to authenticate users (either database or imap)