Fetch project ID:s by project URL

[plaos]

This makes it simpler to add projects. Should probably revisit the parsing if we do this, as multiple space-separated URLs doesn't seem very nice. One suggestion is to continuously read until the user submits the empty string.

[Simon-1-1]

Solved by #110

GraphQL takes the group and project name as argument instead of the project id. So e.g. "volvo-cars/Reviewcheck".

No need to think about the parsing since this will be in the json in the request.