Merge pull request #6308 from jvanbaarsen/help-to-markdown

app/views/admin/hooks/_data_ex.html.haml

app/views/help/permissions.html.haml

app/views/help/public_access.html.haml

app/views/help/ssh.html.haml

app/views/help/system_hooks.html.haml

app/views/help/web_hooks.html.haml

app/views/help/workflow.html.haml

doc/permissions/permissions.md

doc/public_access/public_access.md

doc/ssh/ssh.md

doc/system_hooks/system_hooks.md

doc/web_hooks/web_hooks.md

doc/workflow/workflow.md