packaging: add license metadata

Add metadata to indicate that the package is in the Public Domain.
Merge pull request #89 from kdreyer-usgs/packaging-license

packaging: add license metadata
Refactor and reorganize equations in BaselineCalculator
Refactor and reorganize equations in ObservationBaselineCalculator
Fix equations using other renamed equations
Fix call to wrong equation in eBaseline
Fix merge conflict in MagnetometerOrdinatesView.js
Refactor DeclinationSummaryView to use new function names
Refactor HorizontalIntensitySummaryView to use new function names
Refactor VerticalIntensitySummaryView to use new function names
Refactor ObservationSummaryView to use new function names
Fix merge conflict in BaselineCalculatorTest.js
Re-order includes in observation_data_Test to be consistent with other files
Re-space includes in UserRoleTest to be consistent with other files
Re-space and re-order includes in PierTest to be consistent with other files
Re-order includes in ReadingGroupViewTest to be consistent with other files
Re-space includes in MarkTest to be consistent with other files
Re-space includes in RealtimeDataTest to be consistent with other files
Re-space and re-order includes in ReadingViewTest to be consistent with other files
Re-space and re-order includes in ObservatoryTest to be consistent with other files