Updated Jack's suggest/accuse dialogue

Added interaction between the client subsystem and the suggest/accuse
dialogue box. cs.js can now extract the information submitted by the
user. cs.js and plum.scala.js can now modify the form based on whether
the user clicked Accuse or Suggest button. This way only one form
exists, but can serve two purposes.
Added End Turn button which sends a ENDTURN query to the server.