remove hourly cronjob

The backups start taking to long on a loaded service, so just do them
once a day.
Increase the ULIMITs on the NFS server
fix ownership of nginx sockets
Drop hourly bakckup job
update to ownCloud 6.0.5
Install pgbouncer on each app server

This creates session pooling for the database server. We have seen
hundreds of 500 errors due to the DB server running out of connections.

This fix limits the number of connections (in a pool) from the app to
the db server. Each server can have maximal 10 open sessions to the
db. This can be configured in the pgbouncer.ini file

The app servers now connect locally to the pgbouncer, the only change
is the IP address of the db server in owncloud/config/config.php (now
127.0.0.1)
Reduce number of nginx works to 4

32 was way too much - in general, one nginx worker per core
restart ip-tables persistent in order to load iptable rules
Disable SSLv3 on Loadbalancer
split traffic from broswers and sync clients

to increase perceived speed, make haproxy distinguish traffic from web
browsers and sync clients and send them to separate backend server
groups. Checks the User-Agent header for mirall or csyncoC
Fix the way the cron jobs delete old stuff

the old way was plain wrong and would blow up when a large number of
files had gathered. (There would be a shell expansion of the foo* term
in the path - which fails when there are 250000 files that have piled
up)