Huge role refactoring/cleanup. Other commits will propably follow. Because some bugs will exist. Still important for longrun and also for auto docs/help/slideshow generation

roles/web-app-discourse/handlers/main.yml

@@ -0,0 +1,24 @@
+---
+- name: "stop and remove discourse container if it exist"
+  docker_container:
+    name: "{{applications[application_id].container}}"
+    state: absent
+  register: container_action
+  failed_when: container_action.failed and 'No such container' not in container_action.msg
+  listen: recreate discourse
+  
+- name: "add central database temporary to {{application_id}}_default"
+  command: docker network connect {{applications[application_id].network}} {{ database_host }}
+  failed_when: >
+    result.rc != 0 and
+    'already exists in network' not in result.stderr
+  register: result
+  when: applications | is_feature_enabled('central_database', application_id)
+  listen: recreate discourse
+
+- name: rebuild discourse
+  shell: ./launcher rebuild {{applications[application_id].container}}
+  args:
+    executable: /bin/bash  
+    chdir: "{{docker_repository_directory }}"
+  listen: recreate discourse