Cleanup test directory (#2937)

Moves files around and renames some so that the structure is cleaner and
more consistent

tests/configs/modules/newsfeed/default.js

@@ -14,7 +14,7 @@ let config = {
 				feeds: [
 					{
 						title: "Rodrigo Ramirez Blog",
-						url: "http://localhost:8080/tests/configs/data/feed_test_rodrigoramirez.xml"
+						url: "http://localhost:8080/tests/mocks/newsfeed_test.xml"
 					}
 				]
 			}