Renamed any *_APPLICATION as *_SERVICE
mainly because those components
such as WSF_APPLICATION, renamed as WSF_SERVICE
are not always the main application entry, and "service" describe them better
Minor implementation change in WSF_REQUEST
Cosmetics
- Adopted the ITERATION_CURSOR [WGI_VALUE] design for *_parameters and similar functions
- renamed parameter as item
- provided helper function to handle "string" value parameters
Experimental for now.