Reorder env keys.

Put the S3 entries together.

.do/app.yaml

@@ -45,6 +45,12 @@ services:
     instance_size_slug: basic-xxs
     internal_ports: [2747]
     envs:
+      - key: DATABASE_URL
+        value: '${database.DATABASE_URL}'
+        scope: RUN_TIME
+      - key: REDIS_URL
+        value: '${cache.REDIS_URL}'
+        scope: RUN_TIME
       - key: S3_BUCKET
         value: wikijump-files-dev
         scope: RUN_TIME
@@ -57,12 +63,6 @@ services:
       - key: S3_PATH_STYLE
         value: 'false'
         scope: RUN_TIME
-      - key: DATABASE_URL
-        value: '${database.DATABASE_URL}'
-        scope: RUN_TIME
-      - key: REDIS_URL
-        value: '${cache.REDIS_URL}'
-        scope: RUN_TIME
       - key: S3_ACCESS_KEY_ID
         type: SECRET
         scope: RUN_TIME