externalised news sources

into an xml file. format subject to change. to be read from filesystem.
html xsl transform

very basic display, just to have something
scheduled task setup example

as the goal is to script the server setup, here’s a snippet from the
documentation as a reminder.
api changes

added endpoints for:
* providers (json)
* general status (json)
* news item (json, xml, html)
events

now able to create an event and to save it (not used yet though).
utility functions for providers
some more documentation
some tiny refactoring
first apparition of the sources file

although still not used
more precision