commandline subserver: cleaning up the spawn/exec logic
ide/commandline interface: cleanup, introducing lively.ide.CommandLineInterface.Command
morphic: adding lively.morphic.HtmlWrapperMorph.renderHTML(htmlString) as a
shortcut to get a morph that renders arbitrary HTML. Also added menu items to
HtmlWrapper for quick HTML editing and text export
HTML import: Allow drag'n'drop of HTML content
interactive command: fix command on region output
codeeditor: clearSelection when doing list protocol