Added translation of RaiDrive into danish

[michal78]

A very few translations might be a bit off depending on in what specific context is it used.

[Stanly5]

@michal78 Thank you so much for your contribution. For the confirmation of translation, we are working to release beta version which can be applied language set that you did. I will update you once it is released.

[Stanly5]

@michal78
I'd like to share the captured images for reviewing before release test version of translation, even not complete screen. If you find something to be improved or changed, Issuing Pull request again would be greatly appreciated.

[Stanly5]

Hello Michal,
String line for Proxy was added, and I made it tentatively like below.
Could you please review it is ok or not?

<system:String x:Key="Settings.Proxy">Proxy</system:String>

[Stanly5]

@michal78
RaiDrive 1.4.0 is released. With your great contribution, translated Danish is applied on it and also new file can be tested with it.