Issue 5521 - Restructure CMS documentation to make it easier to use and extend

docs/usage/test-server.md

 # Running the test server #
 
 The test server will convert your content directory on the fly, your changes
 will become visible immediately. To run it you need:
 
 * Python 2.7
 * [Jinja2](http://jinja.pocoo.org/) and
   [Markdown](https://pypi.python.org/pypi/Markdown) modules (can be installed by
   running `easy_install Jinja2 Markdown` from the command line)
 * A current copy of the
   [cms repository](https://github.com/adblockplus/cms/) (can be
   [downloaded as ZIP file](https://github.com/adblockplus/cms/archive/master.zip)
   or cloned via `git clone https://github.com/adblockplus/cms.git`)
 
 Optionally, the [Werkzeug](http://werkzeug.pocoo.org/) module can be installed
 as well, this will provide some developer features.
 
 Run the `runserver.py` script from your content directory, e.g.:
 
     python ../cms/runserver.py
 
 Alternatively, the content directory could also be specified as command line
 parameter of `runserver.py`. This will start a local web server on port 5000,
 e.g. the page the page `pages/example.md` will be accessible under
 `http://localhost:5000/en/example`.
 
 Note that the test server is inefficient and shouldn't be run in production.
-There you should generate static files as explained below.

[Vasily Kuznetsov, 2017/12/12 15:35:25]

I think it would be better to add a link to `generate-static-files.md` here now.
What do you think?

[ire, 2017/12/13 11:10:24]

Good idea. Done.

+There you should generate static files as explained in the next guide,
+[Generating Static Files](generate-static-files.md).