Update settings.html
Update 404.html
Update about.html
Update footer.html
Merge pull request #189 from clementderedec/patch-6

Update footer.html
Merge pull request #188 from clementderedec/patch-5

Update about.html
Merge pull request #186 from clementderedec/patch-3

Update 404.html
Merge branch 'master' into dev