DOC: add doc on serverside

Please test examples.

src/doc/tutorials/serverside.rst

@@ -2,17 +2,18 @@
 Server Side Scripting
 =====================
 
-The administrator may store regularly needed scripts, e.g. for computing a standardized analysis, on
-the same machine as the CaosDB server, "on the server side", where they can be run directly by the
-server.
+The administrator may store regularly needed scripts, e.g. for computing a
+standardized analysis, on the same machine as the CaosDB server, "on the server
+side", where they can be run directly by the server.
 
-The execution of those scripts can be initiated using the Python client, or the web interface.
+The execution of those scripts can be initiated using the Python client, or the
+web interface.
 
 Call a Script
 ~~~~~~~~~~~~~
 
-If you have access to the server and sufficient permissions to run the script, execution is fairly
-simple:
+If you have access to the server and sufficient permissions to run the script,
+execution is fairly simple:
 
 .. code:: python
 
@@ -35,9 +36,12 @@ permissions and changes are logged as if they were done by you directly.
 Testing it
 ~~~~~~~~~~
 
-You can try this out using for example the ``diagnostics.py`` script (it is also available on
-https://demo.indiscale.com). The script returns information about the server in JSON format. You can
-do for example the following:
+You can try this out using for example the ``diagnostics.py`` script (it is part
+of the `CaosDB server repository
+<https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/blob/main/scripting/bin/administration/diagnostics.py>`_
+and is also available on https://demo.indiscale.com). The script returns
+information about the server in JSON format. You can do for example the
+following:
 
 .. code:: python