Variety of fixes all over the place

Makes buildbot more usable, but still tweaks are needed.

templates/buildslave.html

@@ -5,7 +5,7 @@
 {% block content %}
 <h1>Buildslave: {{ slavename|e }}</h1>
 
-<div class="col-md-6">
+<div>
 
 {% if current %}
   <h2>Currently building:</h2>
@@ -27,7 +27,7 @@
 {{ build_table(recent, True) }}
   
 </div>
-<div class="col-md-6">
+<div>
 {% if access_uri %}
   <a href="{{ access_uri|e }}">Click to Access Slave</a>
 {% endif %}