Upgrade microsite

modules/microsite/docs/doc/processing.md

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+---
+layout: docs
+title: Processing Queue
+---
+
+# {{ page.title }}
+
+
+The page *Processing Queue* shows the current state of document
+processing for your uploads.
+
+At the top of the page a list of running jobs is shown. Below that,
+the left column shows jobs that wait to be picked up by the job
+executor. On the right are finished jobs. The number of finished jobs
+is cut to some maximum and is also restricted by a date range. The
+page refreshes itself automatically to show the progress.
+
+Example screenshot:
+
+<div class="thumbnail">
+  <img src="../img/processing-queue.jpg">
+</div>
+
+You can cancel running jobs or remove waiting ones from the queue. If
+you click on the small file symbol on finished jobs, you can inspect
+its log messages again. A running job displays the job executor id
+that executes the job.
+
+Currently the job queue executes just the document processing tasks,
+but it may be used for other long running tasks in the future.
+
+Since job executors are shared among all collectives, it may happen
+that a job is some time waiting until it is picked up by a job
+executor. You can always start more job executors to help out.
+
+If a job fails, it is retried after some time. Only if it fails too
+often (can be configured), it then is finished with *failed* state. If
+processing finally fails, the item is still created, just without
+suggestions. But if processing is cancelled by the user, the item is
+not created.