refactor constants
revenueservlet is causing issue on heroku when we include custom jars.
but same thing on jsp probably is ok.  so we'll try to test it on jsp
instead.
try to see if servlet using classes in custom jar is fine.
looks like heroku cannot handle servlet that uses custom jar.  very
weird.  so push all stuff that uses custom jar to jsp for now.
give revenue.jsp parameters
30days revenue jsp