Improve graphs.
add unison info on the readme.txt
added missing file needed for Unison support
Update French Language file (Regis Caubet)
Fix typo in diag:log:setting and diag:ping page (Bob remarks)
Force the chmod 711 to root directory on the startup script
Updated version number, and 'chmod 711 /' information on readme.txt file
Fixed the too small image file size
change version to 0.68RC4