github: lower stale trigger days to 60

set close to 14 days after stale label
modify the stale message to include tips for contributors

.github/stale.yml

 # Configuration for probot-stale - https://github.com/probot/stale
 
-# Number of days of inactivity before an Issue or Pull Request becomes stale
-daysUntilStale: 180
-
-# Number of days of inactivity before a stale Issue or Pull Request is closed.
-# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
-daysUntilClose: 7
-
-# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
-exemptLabels:
-  - S-WIP
-
-# Set to true to ignore issues in a project (defaults to false)
-exemptProjects: false
-
-# Set to true to ignore issues in a milestone (defaults to false)
-exemptMilestones: false
-
-# Label to use when marking as stale
-staleLabel: S-stale
-
-# Comment to post when marking as stale. Set to `false` to disable
-markComment: >
-  This issue has been automatically marked as stale because it has not had
-  recent activity. It will be closed if no further activity occurs. Thank you
-  for your contributions.
-
-# Comment to post when removing the stale label.
-# unmarkComment: >
-#   Your comment here.
-
-# Comment to post when closing a stale Issue or Pull Request.
-# closeComment: >
-#   Your comment here.
-
-# Limit the number of actions per hour, from 1-30. Default is 30
-limitPerRun: 30
-
-# Limit to only `issues` or `pulls`
-only: pulls
-
-# Optionally, specify configuration settings that are specific to just 'issues' or 'pulls':
 pulls:
-  daysUntilStale: 180
+  daysUntilStale: 60
+  daysUntilClose: 14
+  staleLabel: S-stale
+  exemptLabels:
+    - S-WIP
   markComment: >
     This pull request has been automatically marked as stale because it has not
-    had activity in the last 180 days. It will be closed in 7 days if no further
-    activity occurs. Thank you for your contributions.
-
-# issues:
-#   exemptLabels:
-#     - confirmed
+    had activity in the last 60 days. It will be automatically closed if no
+    further activity occurs in the next 14 days. If you are still waiting for a
+    review or response from one of our developers you can leave a comment to
+    remove the stale label. If you know the username of the maintainer of the
+    aport you could try to mention the username in the comment. You can also
+    join our IRC channels on freenode and see if you can find an available
+    developer. Thank you for your contributions.
+  closeComment: >
+    This pull request has been automatically closed.