added not hidden field

common/lib/capa/capa/templates/crystallography.html

@@ -7,5 +7,6 @@
     <div class="script_placeholder" data-src="/static/js/${display_file}"></div>
   
    <input type="hidden" name="cryst_answer_${id}" id="cryst_answer" class="answer"/> 
-   <!-- <input type="text" name="cryst_answer_test_${id}" id="cryst_answer_test" class="answer"/> -->
+   <input type="text" name="cryst_answer_test_${id}" id="cryst_answer_test" class="answer"/>
+  <!-- <input class="check" type="button" value="Check"/> -->
 </section>