fix regular expression for detecting links in stdout

The previous expression was matching both the beginning and the end of the line,
which would end up swallowing the next match,
ultimately matching every other URL in the string.

This removes the end-of-line check, so it will match every URL.

The wrapURLs function to make URLs easier to identify does not seem to have been necessary,
and has thus been removed.

closes #2834
Merge pull request #3078 from minrk/link_re

fix regular expression for detecting links in stdout