Move to python3

Signed-off-by: Julius Härtl <jus@bitgrid.net>

.github/workflows/sphinxbuild.yml

@@ -0,0 +1,36 @@
+name: "Pull Request Docs Check"
+on:
+- pull_request
+- push
+
+jobs:
+  user_manual:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: ammaraskar/sphinx-action@master
+      with:
+        docs-folder: "user_manual/"
+        pre-build-command: pip install -r requirements.txt
+        build-command: make html
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+  developer_manual:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: ammaraskar/sphinx-action@master
+      with:
+        docs-folder: "developer_manual/"
+        pre-build-command: pip install -r requirements.txt
+        build-command: make html
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+  admin_manual:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: ammaraskar/sphinx-action@master
+      with:
+        docs-folder: "admin_manual/"
+        pre-build-command: pip install -r requirements.txt
+        build-command: make html
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"