We only need one url for a repo

[AnthonySteele]

We only need one url for a repo. The difference between HtmlUrl and CloneUrl is not clear, I think it's duplication. #633

Needs testing with github

[AnthonySteele]

The issue may be that when matching the git url, it exists in 2 forms that need to be matched with each other
on the browser url bar it is e.g. https://github.myco.com/SomeTeam/SomeApi
if you "clone with https" it is e.g. https://github.myco.com/SomeTeam/SomeApi.git

We should consider these equivalent, but that should be done in the github handling code, not in the source-control-platform-independent Repository class