Add mumble service
Add vpn section
Add section guides (including vpn)
Improve guide/vpn
Add 'encodage putty' to ssh section
Add "hebergement" & "bdd" sections
Add bdd & hebergement secions (fix)
Add ftp section
Add irc section
Add gitlab section
Improve mumble explanation in faq
Merge branch 'master' of github.com:ares-ensiie/documentation

* 'master' of github.com:ares-ensiie/documentation:
  typo
  Add some services
  fix links
  update openstack add image
  Add Glance documentation to add an image

Conflicts:
	source/faq.md