Cleanup (#600)

* General Code Cleanup
 * Add check for TABs to check_style_guide.py
 * Removing warnings

include/openspace/network/messagestructures.h

@@ -206,7 +206,7 @@ struct TimeKeyframe {
         // Timestamp
         size = sizeof(_timestamp);
         memcpy(&_timestamp, buffer.data() + offset, size);
-        offset += size;
+        // offset += size;
     };
 };