first stab at mkdocs migration

refactor CSCS and Meg content

add merlin6 quick start

update merlin6 nomachine docs

give the userdoc its own color scheme

we use the Materials default one

refactored slurm general docs merlin6

add merlin6 JB docs

add software support m6 docs

add all files to nav

vibed changes #1

add missing pages

further vibing #2

vibe #3

further fixes

docs/merlin6/cluster-introduction.md

@@ -0,0 +1,27 @@
+---
+title: Introduction
+#tags:
+#keywords:
+last_updated: 28 June 2019
+#summary: "Merlin 6 cluster overview"
+sidebar: merlin6_sidebar
+permalink: /merlin6/cluster-introduction.html
+---
+
+## Slurm clusters
+
+* The new Slurm CPU cluster is called [**`merlin6`**](cluster-introduction.md).
+* The new Slurm GPU cluster is called [**`gmerlin6`**](../gmerlin6/cluster-introduction.md)
+* The old Slurm *merlin* cluster is still active and best effort support is provided. 
+The cluster, was renamed as [**merlin5**](../merlin5/cluster-introduction.md).
+
+From July 2019, **`merlin6`** becomes the **default Slurm cluster** and any job submitted from the login node will be submitted to that cluster if not . 
+* Users can keep submitting to the old *`merlin5`* computing nodes by using the option ``--cluster=merlin5``.
+* Users submitting to the **`gmerlin6`** GPU cluster need to specify the option ``--cluster=gmerlin6``.
+
+### Slurm 'merlin6'
+
+**CPU nodes** are configured in a **Slurm** cluster, called **`merlin6`**, and
+this is the _**default Slurm cluster**_. Hence, by default, if no Slurm cluster is 
+specified (with the `--cluster` option), this will be the cluster to which the jobs
+will be sent.