Update issue #85 and issue #65 : Keep filters in graph order to preserve layout when loading/saving XML - saving and loading as GRF files seems to change order of filters anyway
Split XML saving code into separate functions for readability. No functional changes.


git-svn-id: http://graph-studio-next.googlecode.com/svn/trunk@133 c2f33eb2-41b2-391d-4cb4-d9d0608729ba