Adapted MailQueue.pm to TryCatch::Lite
Merge pull request #1297 from Zentyal/jag/mailqueue-trycatch-lite

Adapted MailQueue.pm to TryCatch::Lite
Merge pull request #1298 from Zentyal/ejhernandez/df-plugin-collectd-5

Fix disk usage again including reserved space
Merge pull request #1299 from Zentyal/ejhernandez/mon-servers-on-conf-file

Give support to set monitoring servers on rs_monitoring_servers
Active session check does not check subapp authenticated requests now

This implies launching multiple jobs at once now works with PSGI/Plack
Merge branch 'ejhernandez/rs-launch-jobs-simultaneously' into poc