Add back description to Corpus page.

web/app/templates/corpora/corpus.html.j2

@@ -39,20 +39,28 @@
 
       <div class="card">
         <div class="card-content" style="border-top: 10px solid {{ scheme_primary_color }}">
-          <span class="card-title">Chronometrics</span>
           <div class="row">
+            <div class="col s12">
+              <div class="input-field">
+                <input class="corpus-description" disabled id="corpus-description" type="text">
+                <label for="corpus-description">Description</label>
+              </div>
+            </div>
+
             <div class="col s12 m6">
               <div class="input-field">
                 <input class="corpus-creation-date validate" disabled id="corpus-creation-date" type="text">
                 <label for="corpus-creation-date">Creation date</label>
               </div>
             </div>
+
             <div class="col s12 m6">
               <div class="input-field">
                 <input class="corpus-last-edited-date validate" disabled id="corpus-last-edited-date" type="text">
                 <label for="corpus-last-edited-date">Last edited</label>
               </div>
             </div>
+
             <div class="col s12 m6">
               <div class="input-field">
                 <input class="corpus-token-ratio validate" disabled id="corpus-token-ratio" type="text">