Fixed issue #215 : Removed standard edit keyboard accelerators to fix edit control shorcuts in all modeless dialogs.
Made text information window read only.
Added Ctrl-Y keyboard keyboard accelerator for registered file types.


git-svn-id: http://graph-studio-next.googlecode.com/svn/trunk@309 c2f33eb2-41b2-391d-4cb4-d9d0608729ba