gitea link added

_quarto.yml

@@ -21,8 +21,11 @@ book:
   sidebar:
     logo: "images/julia-logo-color.svg"
     tools:
+      - icon: github
+        href: https://gitea.math.uni-leipzig.de/hellmund/JuliaKurs23
       - icon: download
         href: "Julia-f%C3%BCr-Numerik.pdf"
+      
 
   search: false
   downloads: [pdf]
@@ -32,7 +35,9 @@ book:
       All content licenced under [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/).
     right: |
       Created with [Quarto](https://quarto.org/)  
-    background: "#f8f9fa"  
+    background: "#f8f9fa"
+  page-navigation: true
+  back-to-top-navigation: true   
 
   chapters:
     - index.qmd
@@ -103,7 +108,6 @@ format:
       
 latex-auto-install: false
 
-
 execute:
   cache: true
   output: true
@@ -118,7 +122,6 @@ keep-ipynb: true
 keep-tex: true
 keep-md: true
 
-
 jupyter: julia-1.8
 
 filters: