Add API button to challenge records

[jmgasper]

On the challenge list, we need a button / link for each record that opens up the API data for the challenge in a new tab.

The link will look something like https://api.topcoder-dev.com/challenges/{challenge ID}

What we will do to address this is:

1. Clicking the title link will open the API URL in a new tab, replacing the current functionality to open community app
2. In the Go To drop down, we will add a new item called "Challenge Details" that will open up https://topcoder-dev.com/challenges/{challenge ID}, similar to what happens now when the challenge title is clicked.