Added description to results classes.
Removed unnecessary class
Clean code: removed feature out, updated corresponding test cases.
Merge pull request #74 from jvelilla/master

Added description to results classes.
Removed unnecessary classes
Clean code: removed feature out, updated corresponding test cases.
Added WSF_SELF_DOCUMENTED_AGENT_HANDLER and variants for uri, uri_template, starts_with, ...
to provide a way to documentate easily wsf agent handler.
Use WSF_RESPONSE.put_header_lines (header_object) when possible, instead of put_header_text (header_object.string)
Added implicit conversion from agent to WSF_URI_TEMPLATE_AGENT_HANDLER
Mainly for convenience.
Reused string constants from HTTP_HEADER_NAMES
Removed unwanted call to RT_DEBUGGER in WSF_DEBUG_HANDLER.

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