update Run Stack and Run This Card icons

A few Readme fixes

Allow constraining interactive drag to move objects to just H or V by…

… holding down Shift

Remove use of Bitmap.SetScaleFactor() to allow running on wxPython 4.…

…1.1 on linux

fix first load crash (no config file yet)

windows scrolling tweak

Update README

analyser: restart parsing tokens after more symbol chars

fix inspector bug

save manual and reference to html for the wiki