make esquery use media type
add user/pass to command line
set preauthenticate on request to validate user
remove debugigng writeline
Merge pull request #124 from EventStore/esquerystuff

Esquery Issues
trivial change. Just merging. #askforforgiveness
Refactoring: IODispatcher and IODispatcherAsync separated
Added: IODispatcherAsync.BeginUpdateStreamAcl
Changed: configuring expiration for master projections StreamByCategoryStandardProjection
Added: configuring projection communication streams with expiration settings