demo removed, no more free dynos on heroku

couscous.yml

@@ -35,9 +35,6 @@ menu:
                 development:
                     text: Development
                     relativeUrl: development.html
-                demo:
-                    text: Demo
-                    relativeUrl: demo.html
         config:
             name: Configuration
             items:

docs/demo.md

@@ -1,11 +0,0 @@
----
-currentMenu: demo
----
-
-## Demo
-[https://demo.filegator.io](https://demo.filegator.io)
-
-This is read-only demo with guest account enabled.
-
-- you can log in as `john/john` to see John's private files
-- or `jane/jane` as readonly + download user.

docs/index.md

@@ -1,5 +1,4 @@
 ## FileGator
-<a href="https://demo.filegator.io"><img src="https://img.shields.io/badge/Live-Demo-brightgreen.svg?style=flat-square" alt="Live demo"></a>
 <a href="https://github.com/filegator/filegator/actions"><img src="https://github.com/filegator/filegator/workflows/PHP/badge.svg" alt="Build Status PHP"></a>
   <a href="https://github.com/filegator/filegator/actions"><img src="https://github.com/filegator/filegator/workflows/Node/badge.svg" alt="Build Status Node"></a>
 <a href="https://codecov.io/gh/filegator/filegator"><img src="https://codecov.io/gh/filegator/filegator/branch/master/graph/badge.svg" alt="Code Coverage"></a>