Update banners

- Adds "Create a new environment" title to info banner
- Adds a new "environment added" success banner

atst/routes/applications/settings.py

@@ -159,7 +159,7 @@ def new_environment(application_id):
     if env_form.validate():
         Environments.create(application=application, name=env_form.name.data)
 
-        flash("application_environments_updated")
+        flash("environment_added", environment_name=env_form.data["name"])
 
         return redirect(
             url_for(

atst/utils/flash.py

@@ -12,6 +12,13 @@ MESSAGES = {
         "message_template": "Application environment members have been updated",
         "category": "success",
     },
+    "environment_added": {
+        "title_template": translate("flash.success"),
+        "message_template": """
+            {{ "flash.environment_added" | translate({ "env_name": environment_name }) }}
+        """,
+        "category": "success",
+    },
     "application_environments_updated": {
         "title_template": "Application environments updated",
         "message_template": "Application environments have been updated",
@@ -24,7 +31,7 @@ MESSAGES = {
     },
     "invitation_resent": {
         "title_template": "Invitation resent",
-        "message_template": "The {{ officer_type }}  has been resent instructions to join this portfolio.",
+        "message_template": "The {{ officer_type }} has been resent instructions to join this portfolio.",
         "category": "success",
     },
     "task_order_draft": {