Merge branch 'panel-spacing' into 'master'

Reduce whitespace above and below panel contents.

See merge request !43

static/css/custom.css

@@ -123,3 +123,7 @@ table-layout: fixed;
   display: inline !important;
 }
 
+.panel-body {
+padding-top: 2px;
+padding-bottom: 2px;
+}