NOJIRA Improved and documented caGetOption() helper
NOJIRA Reimplemented and documented BaseModel::find(); added LabelableBaseModelWithAttributes::find() capable of finding using labels
NOJIRA Added data migration util method for importing movements; modified import methods to use LabelableBaseModelWithAttributes::find() and to support matching on idnos
PROV-538 Fix for relationships not imported when mapping is <related table>.idno-to-existing record
Merge branch 'master' of http://github.com/collectiveaccess/providence