German Translation: 'Shared Web Space'

[RainerBielefeld]

Currently \riseup_help-master\pages\lists\list-admin\configuration\shared-web-space\de.text is missing. I will create translation based on en.text next days.

[RainerBielefeld]

But that would be rather useless if nobody cares. I will wait until there is some progress with #633, #639, #645