Use the default values for input/output buffers

Before it was using a buffer of 8Mb.
This meant that for every message received/sent, a buffer of 8Mb was
being allocated.
This in turn were causing a log of memory pressure and the service would
crash with Out of Memory.
After this change, the IO buffers have a 4Kb size that doesn't create
the same memory pressure.
Even if the buffer is only 4Kb, it still works for messages that are
bigger than 4Kb.

Author: jpires

src/main/java/de/rwth/idsg/steve/SteveAppContext.java

@@ -80,8 +80,6 @@ public HandlerCollection getHandlers() {
      */
     public void configureWebSocket() {
         JettyWebSocketServerContainer container = JettyWebSocketServerContainer.getContainer(webAppContext.getServletContext());
-        container.setInputBufferSize(MAX_MSG_SIZE);
-        container.setOutputBufferSize(MAX_MSG_SIZE);
         container.setMaxTextMessageSize(MAX_MSG_SIZE);
         container.setIdleTimeout(IDLE_TIMEOUT);
     }