Fixes #9787 - correctly typecast default values

JSON and YAML default values were double typecasted, once by active
record and then by value_of_key method.

(cherry picked from commit a2468540b62942a2a9adfb428003d5308df7ab56)

Fixes #9673 - treat YAML and JSON lookup keys as strings

(cherry picked from commit 25a7f806ed586bd32ee647f2acd8e5a0224cbbfb)

refs #8817 - Revert "fixes #5841 - use inner query when retrieving reports for subset of authorised hosts"

This reverts commit ecdb85a84915954f312889ba51a9b35de86cd38c.

fixes #9118 - host mailer should not fail if no owner set for host

(cherry picked from commit 699433930fe80c905b757ae951a5aaa1952f0e9f)

Conflicts:
test/unit/host_mailer_test.rb

Fixes #9231 - Require English lib and fix ENC failure

(cherry picked from commit 350a0417951ebff465cda10645eae5c1dedae2cc)

fixes #9274 - hostgroup#clone clones config groups

(cherry picked from commit 6a07eb8155e82dcd7b22b2b41e05cb2233e8f52a)

fixes #8565 - only get unique, unused message/source IDs to speed up expiry

(cherry picked from commit 9fde85ad830031d38a6786d30a48519344dad446)

fixes #5812 - url parameter in compute_resource#create is not required for EC2, removing the required flag

(cherry picked from commit 06c8a10ebcfe2bf2e61fa4a047d1002abe90cbbf)

Fixes #6884 - Installation media without $minor generate broken $version

$version is generated with the major version and a dot, producing paths
like foo.bar/x64/7. which don't exist. For CentOS at least we want to generate
a path without the dot. The default values for these media have been changed too....

Fixes #8052 - allows erb in array and hash params

(cherry picked from commit f8a56f5bd809305080e4ba69113f73f65957a3f9)