Enable binding of API endpoints during simulation, and only ONCE

Author: techninja

resources/main.js

@@ -126,6 +126,8 @@ function bindMainControls() {
       initializing = false;
     }
 
+    robopaint.api.bindCreateEndpoints();
+
     setModal(false);
   });
 

resources/scripts/main.api.js

@@ -31,7 +31,11 @@ robopaint.api.print = {
 var printDisabledMessage = 'The SVG import API is currently disabled. Enable it in settings and then click the button in the RoboPaint GUI.';
 
 // Trigger to create all endpoints when endpoint creation is ready
+robopaint.api.endpointsBound = false
 robopaint.api.bindCreateEndpoints = function(){
+  if (robopaint.api.endpointsBound) return; // Only bind endpoints ONCE
+  robopaint.api.endpointsBound = true;
+
   /**
    * `robopaint/v1/print` endpoint
    * GET - List print queue and current status