IdealGraphVisualizer bugfixes: * When removing graphs, ensure that the position indices in the range slider remain valid (although they might represent different graphs afterwards) * Instead of removing the last remaining graph of a group, remove the entire group. This prevents problems in some components that assume that a group always has at least one graph.

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; This .DEF file is a placeholder for one which is automatically
; generated during the build process. See
; make\windows\build_vm_def.sh and
; make\windows\makefiles\projectcreator.make (esp. the "-prelink"
; options).
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