fix(docs): fix icon and Mermaid support

* remove the broken stuff

* add mermaid support on all pages

* add mermaid to the local js stuff

Author: paule96

docs/Gemfile

@@ -9,8 +9,6 @@ source "https://rubygems.org"
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
 gem "jekyll", "~> 3.8.5"
-# for mermaid
-gem "jekyll-mermaid-diagrams"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "just-the-docs"

docs/_config.yml

@@ -41,8 +41,6 @@ readme_index:
   remove_originals: true
   with_frontmatter: true
 
-gems: [jekyll-mermaid-diagrams]
-
 # Other Variables
 contributors: '[contributors](https://github.com/T-Systems-MMS/phonebook/graphs/contributors)'
 current_issues: '[current Issues](https://github.com/T-Systems-MMS/phonebook/issues)'

docs/_layouts/default.html

@@ -89,6 +89,19 @@ <h2 class="text-delta">Table of contents</h2>
       </div>
     </div>
   </div>
+  <script src="assets/js/mermaid.8.5.0.js"></script>
+  <script>
+  var config = {
+      startOnLoad:true,
+      theme: 'forest',
+      flowchart:{
+              useMaxWidth:false,
+              htmlLabels:true
+          }
+  };
+  mermaid.initialize(config);
+  window.mermaid.init(undefined, document.querySelectorAll('.language-mermaid'));
+  </script>
 
 </body>
 </html>