message: Remove AutoRingsize option; set min&max ring size option to readonly
diff: @@ -1125,17 +1125,12 @@ downloaded 0 blocks of history..."></progress>
  <div class=form-group><label class="col-sm-3 control-label option p-l-20" for=optMinRingSize>Minimum Ring size:</label>
  <div class=col-sm-9>
  - <div class=option><input id=optMinRingSize class=form-control-options-page min=1 placeholder=1 type=number></div>
  + <div class=option><input readonly id=optMinRingSize class=form-control-options-page min=1 placeholder=1 type=number></div>
  </div>
  </div>
  <div class=form-group><label class="col-sm-3 control-label option p-l-20" for=optMaxRingSize>Maximum Ring size:</label>
  <div class=col-sm-9>
  - <div class=option><input id=optMaxRingSize class=form-control-options-page max=200 placeholder=100 step=1 type=number></div>
  - </div>
  - </div>
  - <div class=form-group><label class="col-sm-3 control-label p-l-20" for=optAutoRingSize>Automatically select ring size</label>
  - <div class=col-sm-9>
  - <div class="checkbox option check-danger"><input id=optAutoRingSize title="Automatically select ring size based on best available output counts" type=checkbox><label class=option for=optAutoRingSize title="Automatically select ring size based on best available output counts"></label></div>
  + <div class=option><input readonly id=optMaxRingSize class=form-control-options-page max=200 placeholder=100 step=1 type=number></div>
  </div>
  </div>
  <div class=form-group><label class="col-sm-3 control-label p-l-20" for=optSecureMessaging>Enable Secure messaging</label>
  