Added SmartSign
Add schoolsoft
Added email provider Posteo.
update OVH exceptions

OVH only provides secured accounts to its French customers.
capitalized French
Use relative links for notes

It makes it easier to test locally.
Move note header to an _include
Whitespace and random tidying up
Include note header for all other notes
Update Vanguard info
Merge pull request #800 from nick-smith-microcosm/master

Add SmartSign
Merge pull request #870 from qrawl/ovh_nooooo

Add OVH exceptions
Merge pull request #865 from Carlgo11/patch-schoolsoft

Add Schoolsoft to education.yml
Merge pull request #894 from jdavis/update-vanguard

Update Vanguard details - now support 2FA
Merge pull request #867 from rose85dol/master

Added email provider Posteo.