Add in 'console' doc stuff (#342)

* Add 'playSound' api docs

* Add in 'console' doc stuff

* Add 'send to screen' in summary\

libs/core/console.ts

@@ -51,6 +51,7 @@ namespace console {
      */
     //% blockId=logsendtostreen block="send console to screen"
     //% weight=1
+    //% help=console/send-to-screen
     export function sendToScreen(): void {
         console.screen.attach();
     }

libs/core/control.cpp

@@ -10,6 +10,7 @@ namespace control {
  */
 //% weight=21 blockGap=12 blockId="control_raise_event"
 //% block="raise event|from %src|with value %value" blockExternalInputs=1
+//% help=control/raise-event
 void raiseEvent(int src, int value) {
     pxt::raiseEvent(src, value);
 }