Fixed some errors from the practice contest.  LastEditActivity.php
encountered an error when there were no edits in the database.  Siwtched
the EditActivity support to use the generic database tables without the
year in the prefix.  Analyzer had trouble with line counts on binary
files under git.  forceFile.py and ignoreFile.py used the wrong
field to get the filename extension list.  Also, added a script to
enter team strips into the database.