Change Details

- varnish/vhost: Use dash separators in x-forwarded-proto header (actually blocking) expressjs backend engine does not agree with the _ separated version. Apparently, current other backends are ok with the existing version. - varnish: Add websocket support (hedgedoc frontend needs it) - hedgedoc: Drop unneeded empty configuration (more cosmetic than anything) Related to T2935

- varnish/vhost: Use dash separators in x-forwarded-proto header (actually blocking) expressjs backend engine does not agree with the _ separated version. Apparently, current other backends seem somewhat ok with the existing versions though. - varnish: Add websocket support (hedgedoc frontend needs it) - hedgedoc: Drop unneeded empty configuration (more cosmetic than anything) Related to T2935

- varnish/vhost: Use dash separators in x-forwarded-proto header (actually blocking) expressjs backend engine does not agree with the _ separated version. Apparently, current other backends areseem somewhat ok with the existing versions though. - varnish: Add websocket support (hedgedoc frontend needs it) - hedgedoc: Drop unneeded empty configuration (more cosmetic than anything) Related to T2935