Replaced menu icon in secondary toolbar (#1459)

Code/Framework/AzQtComponents/AzQtComponents/Images/Menu/menu.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16px" height="16px" viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>Buttons / Dropdown button with Icon / no arrow</title>
+    <g id="Buttons-/-Dropdown-button-with-Icon-/-no-arrow" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="Icons-/-System-/-Menu" fill="#FFFFFF">
+            <rect id="Rectangle-11" x="1.33333333" y="2.66666667" width="13.3333333" height="1.33333333"></rect>
+            <rect id="Rectangle-11" x="1.33333333" y="7.33333333" width="13.3333333" height="1.33333333"></rect>
+            <rect id="Rectangle-11" x="1.33333333" y="12" width="13.3333333" height="1.33333333"></rect>
+        </g>
+    </g>
+</svg>

Code/Framework/AzQtComponents/AzQtComponents/Images/resources.qrc

@@ -28,5 +28,6 @@
         <file alias="script_canvas_editor.svg">Menu/script_canvas_editor.svg</file>
         <file alias="trackview_editor.svg">Menu/trackview_editor.svg</file>
         <file alias="ui_editor.svg">Menu/ui_editor.svg</file>
+        <file alias="menu.svg">Menu/menu.svg</file>
     </qresource>
 </RCC>

Code/Sandbox/Editor/ViewportTitleDlg.ui

@@ -94,7 +94,7 @@
      <widget class="QToolButton" name="m_overflowBtn">
        <property name="icon">
          <iconset>
-           <normaloff>:/stylesheet/img/UI20/menu-centered.svg</normaloff>:/stylesheet/img/UI20/menu-centered.svg
+           <normaloff>:/Menu/menu.svg</normaloff>:/Menu/menu.svg
          </iconset>
        </property>
      </widget>