remove trailing tab
implement the OneList function
remove FLS specific code
import the vanilla dialogs

I’m not sure why it does not work with the original import but it seems
to be needed sometimes as you can see in the AskYesNoCancel function.
fix white spaces
reanable the undo call for FLS
Merge pull request #4 from schriftgestalt/master

some changes to make some of the sample scripts work in Glyphs.