Added css to improve smaller screen usability (PR #668)

app/assets/stylesheets/bootstrap_and_overrides.css.less

@@ -235,6 +235,14 @@ table {
   }
 }
 
+/* Hide the orders article info for small screens
+   to prevent the "save order" button to disappear */
+@media only screen and (max-width: 950px) {
+  tr.order-article:hover .article-info {
+    display: none;
+  }
+}
+
 #order-footer {
   width: 100%;
   right: 0;