Merge pull request #2856 from edx/jibsheet/dont-clobber-theme-git-checkout

This registers over the microsites theming

playbooks/roles/edxapp/tasks/deploy.yml

@@ -118,7 +118,7 @@
   sudo_user: "{{ edxapp_user }}"
   environment:
     GIT_SSH: "{{ edxapp_git_ssh }}"
-  register: edxapp_theme_checkout
+  register: edxapp_comprehensive_theme_checkout
   tags:
     - install
     - install:code