Make ui_next the default UI (#15405)

Change django url dispatcher to serve up ui_next files instead of old ui files

Old UI will not be served with this change

Github CI still runs old ui tests (to be removed in another PR)

Remove the Github workflows that build old UI

---------

Signed-off-by: Seth Foster <fosterbseth@gmail.com>

.github/workflows/devel_images.yml

@@ -62,18 +62,6 @@ jobs:
         run: |
           echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
 
-      - name: Setup node and npm for old UI build
-        uses: actions/setup-node@v2
-        with:
-          node-version: '16'
-        if: matrix.build-targets.image-name == 'awx'
-
-      - name: Prebuild old-UI for awx image (to speed up build process)
-        run: |
-          sudo apt-get install gettext
-          make ui-release
-        if: matrix.build-targets.image-name == 'awx'
-
       - name: Setup node and npm for the new UI build
         uses: actions/setup-node@v2
         with:

.github/workflows/stage.yml

@@ -89,17 +89,6 @@ jobs:
         run: |
           cp ../awx-logos/awx/ui/client/assets/* awx/ui/public/static/media/
 
-      - name: Setup node and npm for old UI build
-        uses: actions/setup-node@v2
-        with:
-          node-version: '16'
-
-      - name: Prebuild old UI for awx image (to speed up build process)
-        working-directory: awx
-        run: |
-          sudo apt-get install gettext
-          make ui-release
-
       - name: Setup node and npm for new UI build
         uses: actions/setup-node@v2
         with: