port travis doc fixes from master

.travis.yml

@@ -59,6 +59,7 @@ jobs:
   - stage: test
     name: "Test Docs"
     install:
+    - pip install -r requirements.txt
     - pip install -r requirements-docs.txt
     - pip install -e .[sql]
     - pip list
@@ -72,6 +73,7 @@ jobs:
     - RASABASTER=rasabaster-0.7.23.tar.gz
     - curl -sSL -o $RASABASTER "https://storage.googleapis.com/docs-theme/${RASABASTER}?q=$(date +%s%N)"
     - pip install $RASABASTER
+    - pip install -r requirements.txt
     - pip install --no-cache-dir -r requirements-docs.txt
     - pip install git+https://${GITHUB_TOKEN}:x-oauth-basic@github.com/RasaHQ/sphinxcontrib-versioning.git@version_list
     - pip install -e .