Introduce feature toggles and hide ellipsis tool behind such toggle

js/_featureToggles.js

@@ -0,0 +1,33 @@
+const featureToggles = (function featureTogglesModule() {
+
+    const ellipseToolLocalStorageKey = 'feature_ellipseTool';
+
+    return {
+        onLoad: () => {
+            updateEllipseToolVisibility()
+        },
+        enableEllipseTool,
+        disableEllipseTool
+    }
+
+    ////////
+
+    function updateEllipseToolVisibility() {
+        // TODO: [ELLIPSE] Once ellipse is ready for release make it enabled by default
+        const isEllipseToolEnabled = (window.localStorage.getItem(ellipseToolLocalStorageKey) === "yes") || false;
+        const ellipseToolElement = document.getElementById("tools-menu--ellipse");
+        ellipseToolElement.style.display = isEllipseToolEnabled ? 'block' : 'none';
+    }
+
+    function enableEllipseTool() {
+        window.localStorage.setItem(ellipseToolLocalStorageKey, "yes");
+        updateEllipseToolVisibility();
+    }
+
+    function disableEllipseTool() {
+        window.localStorage.setItem(ellipseToolLocalStorageKey, "no");
+        updateEllipseToolVisibility();
+    }
+
+})();
+

js/_onLoad.js

@@ -1,12 +1,17 @@
-//when the page is donw loading, you can get ready to start
-window.onload = function(){
-  currentTool.updateCursor();
+//when the page is done loading, you can get ready to start
+window.onload = function () {
+
+    featureToggles.onLoad();
+
+    currentTool.updateCursor();
+
+    //if the user specified dimensions
+    if (specifiedDimentions) {
+        //create a new pixel
+        newPixel(getValue('size-width'), getValue('size-height'), getValue('editor-mode'));
+    } else {
+        //otherwise show the new pixel dialog
+        showDialogue('splash', false);
+    }
 
-  //if the user specified dimentions
-  if (specifiedDimentions)
-    //create a new pixel
-    newPixel(getValue('size-width'),getValue('size-height'), getValue('editor-mode'));
-  else
-    //otherwise show the new pixel dialog
-    showDialogue('splash', false);
 };

js/pixel-editor.js

@@ -81,3 +81,6 @@
 
 /**libraries**/
 //=include _jscolor.js
+
+/**feature toggles**/
+//=include _featureToggles.js