Added rewrite for default mount path
Select default pier and mark in collections while parsing
changed to extend Model; pierCorrection and trueAzimuthOfMark are part of model and default to 0; removed observatory parameter from methods.
pass calculator into ObservationMetaView so it can set pierCorrection and trueAzimuthOfMark.
update calculator values for pierCorrection and trueAzimuthOfMark when selections change.
Merge pull request #54 from jmfee-usgs/cleanup

Cleanup