changes:
addfilter,routefilter.jssp -> added code so that after adding route/filter to
db, the routes obj in router.js is updated from memory again, this now keeps
the system synced without requiirng a node restart;
user-agent,router.js -> corrected indentation;
filter.js -> modified code so that short-circuit condition is checked properly,
earlier it was not checked properly, only the first filter was being executed;