[server] Exit quickly when a looping task is registered in maintenance mode
In such cases the repository will not have a scheduler on purpose because the
repository will not be kept running and will quickly shutdown after migration
so that it's undesirable to have looping tasks being executed.
Schema of the data
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First take a look at the data schema_ then try to remember that you are browsing
through a heap of data by applying stylesheets to the results of queries. This
site is not a content management system with items placed in folders. It is an
interface to a database which applies a view to retreived data.
.. _schema: ../schema