pgq.SerialConsumer: move tick queries to separate functions to allow overriding them if needed
pgq.SerialConsumer: move tick queries to separate functions to allow overriding them if needed

mpihlak/skytools-dev,mpihlak/skytools-dev,ssinger/skytools-cvs,ssinger/skytools-cvs,mpihlak/skytools-dev,ssinger/skytools-cvs