GitHub Organization repositories display twice

Summary

When loading repositories from GitHub, repositories that exist underneath an Organization are displayed twice

Steps to Reproduce

1. Create a new Organization on GitHub
2. Create a test repository under the Organization
3. Add a new Linked repository to Bamboo:
   1. Select the type of GitHub and enter your credentials
   2. Click Load Repositories

Expected Results

Org repositories should display once

Actual Results

Org repositories display twice