Little typo fixes. Also adding itaVA_experimental_gui, a GUI to quickly test...

Little typo fixes. Also adding itaVA_experimental_gui, a GUI to quickly test filters using the experimental VA configuration.

applications/VirtualAcoustics/VA/itaVA_experimental_renderer_prepare.m

 % Prepare an experimental renderer using PrototypeGEnericPath
 itaVAq
-va.addSearchPath( pwd ); 
+va.addSearchPath( pwd );
 va.reset();
 
 % Find first PGP renderer

applications/VirtualAcoustics/VA/itaVA_setup.m

@@ -87,9 +87,9 @@ if ~isempty( current_va_server_dir )
 end
 
 % NatNetML
-current_natent_dir = which( 'NatNetML.dll' );
-if ~isempty( current_natent_dir )
-    ainfo = NET.addAssembly( current_natent_dir );
+current_natnet_dir = which( 'NatNetML.dll' );
+if ~isempty( current_natnet_dir )
+    ainfo = NET.addAssembly( current_natnet_dir );
     natnetversion_raw = NatNetML.NatNetClientML( 0 ).NatNetVersion();
     vs = sprintf( 'NatNetML (OptiTrack) %d.%d', natnetversion_raw(1), natnetversion_raw(2) );
     set( handles.edit_natnet_version, 'String', vs )