update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/Morpheus/stylesheets/uibase/_headerMessage.less

@@ -0,0 +1,55 @@
+/* About Piwik box top right */
+#header_message {
+  z-index: 0;
+  cursor: default;
+  float: right;
+  overflow: hidden;
+  display: block;
+  height: 20px;
+  font-size: 14px;
+  border-radius: 4px;
+
+  &.update_available:not(.isPiwikDemo) .title {
+    color: #CA8100;
+    font-weight: bold;
+  }
+
+  .icon-warning {
+    padding-left: 2px;
+  }
+}
+
+#header_message:hover,
+#header_message.active {
+  width: auto;
+  height: auto;
+  z-index: 150;
+}
+
+#header_message .header_short {
+  display: block;
+  white-space: nowrap;
+}
+
+#header_message .header_full {
+  display: none;
+}
+
+#header_message:hover .header_short,
+#header_message.active .header_short {
+  display: none;
+}
+
+#header_message:hover .header_full,
+#header_message.active .header_full {
+  display: block;
+}
+
+.header_full {
+  padding-bottom: 5px;
+  line-height: 1.7em;
+}
+
+.header_info, .header_info  a {
+  color: @theme-color-text-light;
+}