refactor CSCS and Meg content

docs/meg/index.md

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+# The MEG local HPC cluster
+
+> The MEG II collaboration includes almost 70 physicists from research
+> institutions from five countries. Researchers and technicians from PSI have
+> played a leading role, particularly with providing the high-quality beam,
+> technical support in the detector integration, and in the design, construction,
+> and operation of the detector readout electronics."
+>
+> —— [Source](https://www.psi.ch/en/cnm/news/in-search-of-new-physics-new-result-from-the-meg-ii-collaboration)
+
+The MEG data analysis cluster is a cluster tightly coupled to Merlin and
+dedicated to the analysis of data from the MEG experiment. Operated for the
+Muon Physics group.