Stern/backoffice docs.

changelog.d/4-docs/stern-docs

@@ -0,0 +1 @@
+Improve documentation for stern tool and helm chart

charts/backoffice/README.md

@@ -1,7 +1,7 @@
 Backoffice frontend
 ===================
 
-This chart provides a basic frontend app that is composed of nginx serving swagger and will soon be found here [here](https://github.com/wireapp/wire-server/blob/develop/tools/backoffice-frontend/README.md). It serves as a tool to perform operations on users and teams such as visualising their user profiles, suspending or even deleting accounts. It is used internally at Wire to provide customer support the means to respond to certain queries from our customers and can be used by anyone that decides to deploy it on their cluster(s).
+This chart provides a [basic frontend app called *backoffice* or *stern*](https://github.com/wireapp/wire-server/blob/develop/tools/stern/README.md) that is built using a simple UI for browsing swagger. It serves as a tool to perform operations on users and teams such as visualising their user profiles, suspending or even deleting accounts. It is used internally at Wire to provide customer support the means to respond to certain queries from our customers and can be used by anyone that decides to deploy it on their cluster(s).
 
 It is intended to be accessed, at the moment, only by means of port forwarding and therefore only available to cluster admins (or more generally, clusters users able to port forward).
 

tools/stern/README.md

@@ -24,3 +24,8 @@ using the `--run-backoffice` option, e.g. `deploy/sevices-demo/demo.sh --run-bac
 
 When you now open `localhost:8080/swagger-ui` in a browser, you can switch to the
 "Back Office" tab.
+
+## Screenshots
+
+![screen shot 1](screenshots/1.png)
+![screen shot 2](screenshots/2.png)