- rise zone's the default hard limit of open FDs/process to 16K
- let the ontohub repo/.ruby-version dictate, what ruby version to install
- convinience: honor env var BRANCH - the default branch to use within the zone.
  If BRANCH is not set on zone install, use a zone name "map" to guess the
  right branch (www|ontohub|ta:master,tb ? staging : development)
- install QT packages on non-{master|staging} zones, only
- allow DB relocation to non-default directories (DB init+reset)
- create ontohub_test DB for non-{master|staging} zones automagically if n/a
- changed postgresql DB access rules from "world RW everything" to little bit
  more fine grained rules (takes effect on new zones/psql instances, only)
- use db user 'ontohub' to access the DBs, always
- let ~admin/etc/oh-update.sh (deployment script) switch automatically to
  "production mode" if QT libs are n/a
- add -u option to ~admin/etc/oh-update.sh (only update repo, i.e. no
  deployment/db reset)
- add -R option to ~admin/etc/oh-update.sh (reset db)
- fix Passenger mode (w/o systemd there is no way aka any utils avail out of the
  box to let httpd and passenger service run in unprivileged mode)
- fix another debian script kiddy bug in /usr/sbin/apache2ctl
- misc typos + more log.infos for convinience
Merge branch 'master' of github.com:ontohub/admin-scripts