components/if-permitted: Added not option.

marko/components/if-permitted/component.js

@@ -7,7 +7,7 @@ module.exports = class {
   
   onInput(input) {
     if (!input.user || !input.user.loggedIn) {
-      this.state.permitted = false
+      this.state.permitted = input.not
       return
     }
 
@@ -18,5 +18,10 @@ module.exports = class {
     } else {
       this.state.permitted = input.user.permissions.includes(input.permission)
     }
+
+    // Flip the above permission
+    if (input.not) {
+      this.state.permitted = !this.state.permitted
+    }
   }
 }