Refactor CORSFilter to only add Access-Control headers if request is
OPTIONS
1) Enhance CORSFilter to incorporate grail-cors routine
2) Rename LongToStringFilter to StringToLongFilter to better represent
what the filter does
1) Add BrandsEye as a contributor
2) Correct issues with CORSFilter JUnit testing
Merge pull request #44 from dfcoffin/master

Refactor CORSFilter to only add Access-Control header fields if request is OPTIONS