Add ConfirmFriendServlet. Web.xml issues seem to be happening whenever I
try to add a servlet. The following steps seem to work around the
problem:
(1) Create a new servlet. Now, if you try to start the server,
corruption of web.xml will cause it to crash.
(2) Tell Git to revert to the HEAD revision. This will not affect the
new servlet since it has not been added to the index yet, but it will
undo the damage to web.xml. After reverting, test that the server runs
correctly.
(3) Now, commit the new servlet to the repository.