initializer plugin system #trainoffice

relates #SERVER-131
include graphite_prefix in graylog2.conf

fixes #SERVER-237 #trainoffice
processor sequence wait strategy now configurable

fixes #SERVER-238
unused imports
input plugin system

fixes #SERVER-131
include alarm_callbacks in system information
register input plugins in mongodb
make sleeping standard processor wait strategy
changed initializer interface. made inits configurable.
cleaned up plugin registry
reduced standard docs per index
last minute release fixes
changes to input interface
Convert GELF fields to String if they are maps

fixes #WEBINTERFACE-386
use graylog2-plugins 0.10.1
smackx is a dependency of smack and makes us get rid of the warnings at startup
upgraded to netty 3.5.11.Final and ElasticSearch 0.20.1
syslog_listen_address is now 0.0.0.0 by default

fixes #SERVER-240
set mongodb_host to 127.0.0.1 by default

not localhost. fixes #SERVER-241
make UDP recv buffer sizes configurable

also removed invalid (duplicated and not working) receive buffer size setting. fixes #SERVER-246