Fixed various issue with parsing string (such as \t and related),

Implemented escaping of slash '/' only in case of '</' to avoid potential issue with javascript and </script>
Many feature renaming to match Eiffel style and naming convention, kept previous feature as obsolete.
Restructured the library to make easy extraction of "converter" classes if needed in the future.
Updated part of the code to use new feature names.

test/autotest/test_suite/json_book_converter.e

@@ -45,7 +45,7 @@ feature -- Conversion
 
 	to_json (o: like object): JSON_OBJECT
 		do
-			create Result.make
+			create Result.make_with_capacity (3)
 			Result.put (json.value (o.title), title_key)
 			Result.put (json.value (o.isbn), isbn_key)
 			Result.put (json.value (o.author), author_key)
@@ -56,19 +56,19 @@ feature {NONE} -- Implementation
 	title_key: JSON_STRING
 			-- Book's title label.
 		once
-			create Result.make_json ("title")
+			create Result.make_from_string ("title")
 		end
 
 	isbn_key: JSON_STRING
 			-- Book ISBN label.
 		once
-			create Result.make_json ("isbn")
+			create Result.make_from_string ("isbn")
 		end
 
 	author_key: JSON_STRING
 			-- Author label.
 		once
-			create Result.make_json ("author")
+			create Result.make_from_string ("author")
 		end
 
 end -- class JSON_BOOK_CONVERTER