Adds GitLab remote link support

Adds Bitbucket remote link support
Adds Visual Studio Team Services remote link support

src/git/remotes/github.ts

@@ -12,7 +12,7 @@ export class GitHubService extends RemoteProvider {
     }
 
     protected getUrlForBranch(branch: string): string {
-        return `${this.baseUrl}/tree/${branch}`;
+        return `${this.baseUrl}/commits/${branch}`;
     }
 
     protected getUrlForCommit(sha: string): string {