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
