added some tests, UNITID/DID added as params to the cmd, same with attribute,value pair to be filtered on for UNITID
new preprocess to ensure there is one and only one ehri_main_identifier
add the eadid to the main_identifier if it is taken from the internal_identifier
bug fixed on running the unitid_tag without parameters
added test to path-structure algorithm
if there is a profiledesc, the revisiondesc should be after that
added test for its esterwegen
trying to leave the original stuff alone. added a new ITS test