[Ohrrpgce] SVN: teeemcee/13226 sliceedit: hold Ctrl to click on invisible slices. Fix dragging/panning

[subversion at HamsterRepublic.com]

teeemcee
2023-04-21 21:59:22 -0700 (Fri, 21 Apr 2023)
154
sliceedit: hold Ctrl to click on invisible slices. Fix dragging/panning also changing selection

Also show a hint when the selected slice isn't resizable.
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U   wip/ohrhelp/template_sliceedit_keys.txt
U   wip/sliceedit.bas