beginning war build.  sets up the base service context and mappings for the power filter
removed unnecessary stuff from empty servlet
changed the war file root context name
removed extra stuff from web.xml
clearing out the rest of the web.xml to be safe
removing all stuff about the empty servlet and added a todo about what it did in power filter
Merge pull request #1150 from rackerlabs/REP-1240_War-Build

Rep 1240 war build