only show nav utils if populated

lms/templates/courseware/courseware-chromeless.html

@@ -74,8 +74,8 @@ ${HTML(fragment.foot_html())}
     ${HTML(fragment.body_html())}
   </section>
 </div>
-
-<nav class="nav-utilities ${"has-utility-calculator" if course.show_calculator else ""}" aria-label="${_('Course Utilities')}">
+% if course.show_calculator or is_edxnotes_enabled(course):
+    <nav class="nav-utilities ${"has-utility-calculator" if course.show_calculator else ""}" aria-label="${_('Course Utilities')}">
       ## Utility: Notes
       % if is_edxnotes_enabled(course):
         <%include file="/edxnotes/toggle_notes.html" args="course=course"/>
@@ -85,6 +85,7 @@ ${HTML(fragment.foot_html())}
       % if course.show_calculator:
         <%include file="/calculator/toggle_calculator.html" />
       % endif
-</nav>
+    </nav>
+% endif
 
 <%include file="../modal/accessible_confirm.html" />

lms/templates/courseware/courseware.html

@@ -207,8 +207,8 @@ ${HTML(fragment.foot_html())}
     </div>
   % endif
 </div>
-
-<nav class="nav-utilities ${"has-utility-calculator" if course.show_calculator else ""}" aria-label="${_('Course Utilities')}">
+% if course.show_calculator or is_edxnotes_enabled(course):
+    <nav class="nav-utilities ${"has-utility-calculator" if course.show_calculator else ""}" aria-label="${_('Course Utilities')}">
       ## Utility: Notes
       % if is_edxnotes_enabled(course):
         <%include file="/edxnotes/toggle_notes.html" args="course=course"/>
@@ -218,6 +218,6 @@ ${HTML(fragment.foot_html())}
       % if course.show_calculator:
         <%include file="/calculator/toggle_calculator.html" />
       % endif
-</nav>
-
+    </nav>
+% endif
 <%include file="../modal/accessible_confirm.html" />