Slightly unfinished error handling and passing from WPS4R
Merge branch 'master' of github.com:USGS-CIDA/coastal-hazards.git
CCH-28
* handles any number, throws error if Object is not a number
Finished off my error handling
* forgot I had done this and didn't want to revert it
* had to change some xpath and general strategy a bit
* front end still has to handle the errors and display
Merge pull request #517 from jiwalker-usgs/master

Numeric handling relaxed as well as some old error handling code