add piwik installation

www/analytics/plugins/Zeitgeist/stylesheets/general/_misc.less

@@ -0,0 +1,41 @@
+#topApiRef {
+    color: #95AECB;
+}
+
+.exception-backtrace {
+    color: #888;
+}
+
+.section-toggler-link {
+  font-size: .8em;
+  font-style: italic;
+  text-decoration: none;
+}
+
+.section-toggler-link:hover {
+  text-decoration: underline;
+}
+
+.metricEvolution {
+  display: inline-block;
+  font-size: 9pt;
+  opacity: 0.75;
+}
+
+.metricEvolution > .positive-evolution {
+  color: green;
+}
+
+.metricEvolution > .negative-evolution {
+  color: #e02a3b;
+}
+
+.reportsByDimensionView > .entityList {
+  float: left;
+  width: 220px;
+  min-height: 450px;
+}
+
+.dimensionCategory {
+  margin-top: 10px;
+}