Minor changes to bezel

I modified the bezel hotkeys so that Return (fn+Enter) changes the stack position without pasting the text.  This is useful on the command line when you want to pipe the contents of a previous clipboard with pbpaste.


For example, when writing papers I use this command to format it.  This commit makes it possible to change back to the buffer I had copied the markdown text into.

    pbpaste | pandoc -f markdown -t latex --latex-engine=xelatex --variable fontsize=12pt -s -H preamble --bibliography=bibliography.bib --csl=chicago-note-biblio-no-ibid.csl | xelatex && open -a Skim texput.pdf