Add support for running tests with geckodriver, do this on CI

.github/workflows/django.yml

@@ -9,9 +9,13 @@ on:
 jobs:
   build:
     if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    runs-on: ubuntu-latest
+    strategy:
+        matrix:
+            browser: ['chrome', 'firefox']
     env:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-    runs-on: ubuntu-latest
+      BROWSER: ${{ matrix.browser }}
     steps:
       - uses: actions/checkout@v2
       - uses: bahmutov/npm-install@v1
@@ -25,14 +29,6 @@ jobs:
         with:
             path: ${{ env.pythonLocation }}
             key: ${{ env.pythonLocation }}-${{ hashFiles('requirements.txt') }}
-      - name: Setup Chromedriver
-        if: \!${{ matrix.parallel }}
-        run: |
-              wget https://chromedriver.storage.googleapis.com/2.36/chromedriver_linux64.zip
-              unzip chromedriver_linux64.zip
-              export PATH=$PATH:$(pwd)
-              chmod +x chromedriver
-              export PATH=$PATH:/usr/lib/chromium-browser/
       - name: Install Dependencies
         run: |
               python -m pip install --upgrade pip