change ch_name to unique_ch_name

when calling that method without re-initializing class instance.

prepost.dlctemplate: using all tags uses way too much disk space, only use those necessary to uniquely define each case

revert commit 0340b1b5

prepost.Simulations: errorlog indicates number of errors, not all line nr occurances (can be too many)

set to pbs_in_turb, fix tests

pbs_in_failed, silent switches for printing
create pbs_in files for Mann64 turbulence generator