Add status text to corpus analysis app startup modal

app/templates/corpora/analysis.html.j2

@@ -53,6 +53,7 @@
     <div class="progress">
       <div class="indeterminate"></div>
     </div>
+    <p class="status-text"></p>
     <p class="errors error-color-text hide"></p>
   </div>
 </div>