Use Iterator to stream the gui files

Stream holds a copy of each read element in memory, which we don't need
or use afterwards. Instead we should use Iterator to actually
stream the gui files to the user and reduce memory consumption.

Author: hlxid

src/main/scala/org/codeoverflow/chatoverflow/ui/web/GUIServlet.scala

@@ -52,7 +52,7 @@ class GUIServlet extends ScalatraServlet with WithLogger {
         val is = new BufferedInputStream(jarFile.getInputStream(entry))
         val os = response.getOutputStream
 
-        Stream.continually(is.read)
+        Iterator.continually(is.read)
           .takeWhile(_ != -1)
           .foreach(os.write)
       }