This change adds a disclosure at the bottom of entries in the connected

services list page to show repositories for each service. When opened,

this provides the list of all connected repositories. This list shows

the repository name, the path (optionally munge-able by the hosting

service so we can show things like "org/repo" for GitHub), and an

indicator for when repositories have access controls.
If there are fewer than 25 repositories in a given list, this just shows

them all. When there are more than that, several additional controls are

available. Above the list is a search bar (which searches both names and

paths), and when there are multiple connected accounts within the

service, a drop-down to filter by account. Below the list is a

paginator.

Ran unit tests.
Tested both the small and large cases. Verified that search and

  filtering worked as expected.