Send out a Notification upon creation of a new Request entity.
The receivers are specified by the corresponding Role logic this Role Request is for. Currently Organization and Club Administrators will receive "new request" messages about respectively Mentor and Club Membership requests.
Fixes Issue 442.
Third-party code that is *not* part of the application image (the Google AppEngine SDK in trunk/thirdparty/google_appengine, for example) belongs intrunk/thirdparty. For third-party code that *is* part of the applicationimage, see the notes in trunk/app/README.== THIRD PARTY LICENSES ==Third-party code must also include a license text file, named LICENSE orCOPYING, in the package subdirectory. If the third-party package subdirectoryis maintained automatically with a tool such as svn_load_dirs.pl (whichremoves files, such as license text files, that were added later to the"target" directory), place the license text file in the trunk/app directoryand add the package name as a suffix.