Switched CSS framework to Bootstrap

views/benchmark/list.twig

@@ -6,8 +6,8 @@
   <p><a href="{{ url_for('benchmark.add') }}">Create new Benchmark</a></p>
 
   {% if benchmarks | length > 0 %}
-    <table class="u-full-width">
-      <thead>
+    <table class="table table-hover table-responsive">
+      <thead class="table-light">
         <tr>
           <th>Benchmark name</th>
           <th>Description</th>