add logstash formatter
logbundle from generator
log to elasticsearch.beta.scapp.io
re-add file and console logger

For some reason the console logger is not working atm though.
remove uneeded config
use graviton as app name and leave the rest up to upstream
do not log to elasticsearch when running phpunit
fix app/logs ignore
switch logging to http due to connection issues on cloudfoundry
Merge branch 'feature/monolog-elasticsearch' into develop