Active sidebar items should have a blue indicator (#1132)

* NavBlocks without NavListItem children are valid

Some sidebar NavBlocks consist of just a header,
and clicking on that header should mark the NavBlock
as active

* Update CHANGELOG

* Leverage markdown to cut down on merge conflicts

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ### Bug Fixes
   1. [#1104](https://github.com/influxdata/chronograf/pull/1104): Fix windows hosts on host list
-  2. [#1125](https://github.com/influxdata/chronograf/pull/1125): Fix visualizations not showing graph name
+  1. [#1125](https://github.com/influxdata/chronograf/pull/1125): Fix visualizations not showing graph name
 
 ### Features
   1. [#1112](https://github.com/influxdata/chronograf/pull/1112): Add ability to delete a dashboard
@@ -12,6 +12,7 @@
 
 ### UI Improvements
   1. [#1101](https://github.com/influxdata/chronograf/pull/1101): Compress InfluxQL responses with gzip
+  1. [#1132](https://github.com/influxdata/chronograf/pull/1132): All sidebar items show activity with a blue strip
 
 ## v1.2.0-beta7 [2017-03-28]
 ### Bug Fixes

ui/src/side_nav/components/NavItems.js

@@ -47,7 +47,7 @@ const NavBlock = React.createClass({
     const {location, className, wrapperClassName} = this.props
 
     const isActive = React.Children.toArray(this.props.children).find((child) => {
-      return child.type === NavListItem && location.startsWith(child.props.link)
+      return location.startsWith(child.props.link)
     })
 
     const children = React.Children.map((this.props.children), (child) => {