Exposes in API the Repo entity's Size and IsBare property (#1668)

* Exposes in API the Repo entity's IsBare property as IsEmpty

Signed-off-by: Guyzmo <guyzmo+github+pub@m0g.net>

* Exposes in API the Repo entity's Size property

Signed-off-by: Guyzmo <guyzmo+github+pub@m0g.net>

models/repo.go

@@ -285,6 +285,8 @@ func (repo *Repository) APIFormat(mode AccessMode) *api.Repository {
 		FullName:      repo.FullName(),
 		Description:   repo.Description,
 		Private:       repo.IsPrivate,
+		Empty:         repo.IsBare,
+		Size:          int(repo.Size/1024),
 		Fork:          repo.IsFork,
 		Mirror:        repo.IsMirror,
 		HTMLURL:       repo.HTMLURL(),