Updated alirelval cmdline opts doc
Small aesthetic fix
FastJet patches: do not let mv ask to overwrite
FastJet CINT patch no longer needed

Syncs with AutoInstall behaviour.
From Marco van Leeuwen.
Specify that FJ Contrib is non-optional w/FJ 3

From Salvatore Aiola's comment
GitTut: subtitles for commits and branches
GitTut: tags and references
Indentation fix in TOC
Merge branch 'master' into feature-alicegit
GitTut: introduction to the workflow