Beta updates (#117)

* fixes for beta

- hide blocks without function
- digital Pin selection bring P0 in first position
- add compass block to end confusion about "basic.showArrow(ArrowNames.North)"
- add approved repos
- add and sort preffered repos
- add prefferedPackages
- disable webUSB
- disable parts
- remove mobileSafariDownloadProtocol
- update socialOptions

* remove `preferredPackages` from `pxtarget`

* Beta updates

- removed robobit extension
- updated docs menu
- added about.md
- added arrow icons
- removed show arrow block

* Beta Update

- replace webUSb Images
- update extension list
- hide II2C Pins from digitalPins
- move compile service repos back to calliope

* replace extension images

* Beta update

- change extension upload button style
- deprecate arrow blocks

Co-authored-by: Juri <gitkraken@juriwolf.de>

libs/core/pinscompat.ts

@@ -212,16 +212,5 @@ namespace pins {
      */
     //% fixedInstance whenUsed
     export const C17: AnalogInPin = new MicrobitPin(DigitalPin.C17);
-
-    /**
-     * Pin C18
-     */
-    //% fixedInstance whenUsed
-    export const C18: DigitalInOutPin = new MicrobitPin(DigitalPin.C18);
-
-    /**
-     * Pin C19
-     */
-    //% fixedInstance whenUsed
-    export const C19: DigitalInOutPin = new MicrobitPin(DigitalPin.C19);
+    
 }