NF: Looking glass "too many routes" should auto-fill "Source"

[rlaager]

When a customer has too many routes, the looking glass displays a message like this:

The routing table t_0047_as5056 has too many routes to display in the web interface. Please use the route search tool to query this table.

The text "the route search tool" is hyperlinked. When you click that, it would be nice if the Source box was automatically filled in. That is:

1. The hyperlink should put the table name in the GET query string.
2. The route-search page should fill the Source box from the GET query string parameter.