DAO: rename VolumeDAO to VolServerDAO to

be more in line with other namings.
Make test-unit fit for async-execution
BaseDAO: also strip whitespace from output

of detached executed subprocesses. Otherwise
parsing will fail.
base-config: do not use term new_desing in

database-name anymore
Merge pull request #98 from chanke/master

prepare VolserverDAO for async