added subtree switch for hierarchy, the rest of hierarchy will be organic
* most classes were just refactored
added uber item to test_data, may conflict with other new test data
Added magic word for "uber" card

* default id for this is "uber"
* may override this with JNDI Environment coastal-hazards.item.uber.id
* context /data/item/uber will return whichever item is set as "uber"
* added mixed theme for when there are more than one theme in an aggregation
* added "uber" itemType for the aggregation items which do not have any information to display in the UI
Merge pull request #537 from jiwalker-usgs/master

sorry for end of friday commit
Wanted to make the documentation a little more clear here
added vulnerability test dataset w/ aggregation
fixed string quote issue
fixed string quote issue
fixed rounding
fixed string quote issue
empty string NA fix
empty fix NA
empty fix NA
fixed string quote issue
Merge pull request #538 from jiwalker-usgs/master

"uber" card modification
resolved database vulnerability conflict.
Merge pull request #539 from jread-usgs/master

Added vulnerability to data model
Merge branch 'master' of github.com:USGS-CIDA/coastal-hazards