fixes #1576 - api v1 - oauth support

• to use set and enable oauth in settings
• correcting typo

fixes #1544 - Updating a host fails if you cannot reach the SOA nameservers

fixes #137 - Better support for non-hostname certnames

This patch introduce a new setting :use_uuid_for_certificates which
defaults to false.

users who wish to deploy their hosts using a random unique id, should
enable that setting, and use the certname directive in their puppet.conf...

ensure rubygems are loaded in case facter / puppet are installed as a gem

cleanups to rails 3 boot process

code smell

fixes #1530 - Disabling puppet env in ENC is now a configurable.

fixes #1528 - tidy up the default settings loader.

Attempts to tidy up the default settings a bit.

Signed-off-by: Mikael Fridh <frimik@gmail.com>

fixes #1446 - expire idle web sessions

fixes #1300 Add support of HTTP Auth with REMOTE_USER env variable