Winset can't create new elements

[ike709]

Needed for eternia and probably SS13

[ERRO] net: 127.0.0.1:25566: exception in message handler for MsgWinSet:
OpenDreamShared.Compiler.CompileErrorException: Invalid attribute value ()
   at OpenDreamShared.Compiler.Parser`1.Error(String message, Boolean throwException) in C:\Users\Ike\Documents\GitHub\OpenDream\OpenDream\OpenDreamShared\Compiler\Parser.cs:line 92
   at OpenDreamShared.Compiler.DMF.DMFParser.TryGetAttribute(String& key, String& token) in C:\Users\Ike\Documents\GitHub\OpenDream\OpenDream\OpenDreamShared\Compiler\DMF\DMFParser.cs:line 249
   at OpenDreamShared.Compiler.DMF.DMFParser.Attributes() in C:\Users\Ike\Documents\GitHub\OpenDream\OpenDream\OpenDreamShared\Compiler\DMF\DMFParser.cs:line 264
   at OpenDreamClient.Interface.DreamInterfaceManager.WinSet(String controlId, String winsetParams) in C:\Users\Ike\Documents\GitHub\OpenDream\OpenDream\OpenDreamClient\Interface\DreamInterfaceManager.cs:line 290
   at OpenDreamClient.Interface.DreamInterfaceManager.RxWinSet(MsgWinSet message) in C:\Users\Ike\Documents\GitHub\OpenDream\OpenDream\OpenDreamClient\Interface\DreamInterfaceManager.cs:line 211
   at Robust.Shared.Network.NetManager.DispatchNetMessage(NetIncomingMessage msg) in C:\Users\Ike\Documents\GitHub\OpenDream\OpenDream\RobustToolbox\Robust.Shared\Network\NetManager.cs:line 912
[ERRO] opendream.interface.winset: Error at winset(keyMapw, "parent='keymap';name='w';command='north'"):1:7: Invalid keyword 'parent'
[ERRO] opendream.interface.winset: Error at winset(keyMapw+UP, "parent='keymap';name='w+UP';command='north-up'"):1:7: Invalid keyword 'parent'
[ERRO] opendream.interface.winset: Error at winset(keyMapNorth, "parent='keymap';name='North';command='north'"):1:7: Invalid keyword 'parent'
[ERRO] opendream.interface.winset: Error at winset(keyMapNorth+UP, "parent='keymap';name='North+UP';command='north-up'"):1:7: Invalid keyword 'parent'
[ERRO] opendream.interface.winset: Error at winset(keyMaps, "parent='keymap';name='s';command='south'"):1:7: Invalid keyword 'parent'

etc