Add Branch to push events for Webhooks

Using:
end(explode('/', $webhook->parsed->ref))

An example of a ref: "refs/heads/master",
so, here we would be getting just "master"
Use entire ref for branch

Just realized that doing end(explode('/', ...)) would result in
issues/38 being converted to just 38.

Use entire ref instead
Add Branch to recent commits dialog

Nothing special with it...
Just add <th> & <td> for it.