service updates and refactoring

...ov/usgs/earthquake/nshmp/aws/HazardResultSliceLambda.java

...sgs/earthquake/nshmp/aws/HazardResultsMetadataLambda.java

.../usgs/earthquake/nshmp/aws/HazardResultsSlicerLambda.java

...n/java/gov/usgs/earthquake/nshmp/site/CybershakeSite.java

...ain/java/gov/usgs/earthquake/nshmp/site/NshmpPolygon.java

src/main/java/gov/usgs/earthquake/nshmp/site/NshmpSite.java

src/main/java/gov/usgs/earthquake/nshmp/site/NuregSite.java

.../java/gov/usgs/earthquake/nshmp/www/HazardController.java

.../java/gov/usgs/earthquake/nshmp/www/meta/Constrained.java

.../java/gov/usgs/earthquake/nshmp/www/meta/Constraints.java

...ain/java/gov/usgs/earthquake/nshmp/www/meta/MetaUtil.java

...ain/java/gov/usgs/earthquake/nshmp/www/meta/Metadata.java

...gs/earthquake/nshmp/www/services/DeaggEpsilonService.java

...gov/usgs/earthquake/nshmp/www/services/HazardService.java

...a/gov/usgs/earthquake/nshmp/www/services/RateService.java

.../gov/usgs/earthquake/nshmp/www/services/ServicesUtil.java

...a/gov/usgs/earthquake/nshmp/www/services/ServletUtil.java

...ov/usgs/earthquake/nshmp/www/services/SourceServices.java

src/test/java/gov/usgs/earthquake/nshmp/NshmTestsLarge.java

src/test/java/gov/usgs/earthquake/nshmp/NshmTestsSmall.java