initial zsh support
zsh fixes for wget Termlet

- bottom of terminal is now updated when Download is initiated, and
  progress is updated, but it is not cleared when download
  finished/canceled
zsh fixes for ps termlet

- menus actually show up now
zsh fixes for ps and wget Termlets

- wget - bottom of terminal is now updated when Download is initiated,
  and progress is updated, but it is not cleared when download
  finished/canceled

- ps - menus actually show up now
Merge branch 'zsh2' into zsh