Fix in pages that don't have qr code

Samo Penic

2019-01-24 8dad6520729d26d90ebee48939d7f2a1fd73dd38

 .idea/sonarIssues.xml

@@ -98,6 +98,11 @@
            <set />
          </value>
        </entry>
        <entry key="$PROJECT_DIR$/../../django/sizif-web/aoi/exam/static/exam/functionality.js">
          <value>
            <set />
          </value>
        </entry>
        <entry key="$PROJECT_DIR$/../../django/sizif-web/aoi/exam/templates/exam/exam_detail.html">
          <value>
            <set />