lkairies-volume-quota/interface: Added ENOSPC to POSIX error types.
lkairies-volume-quota/servers: Added getVolumeQuota() method to StorageManager and VolumeInfo.
lkairies-volume-quota/servers: Added quota check to open operation.
lkairies-volume-quota/servers: Added quota to system attributes and re-implemented get- and setVolumeQuota() methods.
lkairies-volume-quota/servers: Extended quota check for quotas equals 0, i.e. no quota is set.
lkairies-volume-quota/tests: Added quota test.
client: Added ENOSPC error conversion to fuse_adapter.
interface: Added quota to Volume message.
servers: Added quota to CreateVolumeOperation.
client: Added quota to createVolume.
client: Added quota to mkfs.xtreemfs.
client: Added quota to xtfsutil.
servers: Consider volume quota in free space computation (MRC status page).
client: Consider volume quota in available space computation (xtfsutil).
servers: Consider volume quota in free/available/total space computation (StatFSOperation).
servers, client: Fixed free space computation in xtfsutil and MRC status page.
client: Added multipliers for quota in mkfs.xtreemfs.
client: Corrected typo.
client: Added multipliers for quota in xtfsutil.
servers: Consider volume quota in available space computation (DIR status page).