Fixes #2826: only run set_code() on submit if the config template editor is already in diff mode

(cherry picked from commit ceabd2b37d1924a45ee20de100d0e5cb8f39845d)

fixes #2373 - only reference unattended subnet path when in unattended mode

(cherry picked from commit 754e83c1667ab7af677064f468354d325f59c36f)

fixes #2797 - Submit the final code, not the diff in the config template editor
(cherry picked from commit 99b2e61bed1474451fdef1852d484f009dc4cb2f)

fixes #2779 - permission problem with non-admin adding puppetclasses to hosts and hostgroups
(cherry picked from commit 05fbe52cacb64700af76f8f072b2ff5cd16c23cc)

fixes #1770 - Refactored rdeckfacts definition to use facts_hash
(cherry picked from commit 86e9a056e5a1d24b9532674d5f14762a1bd9ab78)

fixes #2791 - ptable api was missing :layout and :os_family
(cherry picked from commit 774ed2d2ac6af23369eafa7658b0a446f3b63adf)

fixes #2782 - LDAP password overwritten as blank
(cherry picked from commit 6a44fab1a948116e93b4690996ae92cfc5d8db03)

fixes #2747 - scoped search lambda takes one argument
(cherry picked from commit bae0bea90d8096e7a787984b7167d13627da94fd)

Conflicts:
test/unit/host_test.rb

fixes #2734 - wrong taxonomy scope on hostgroup and host form
(cherry picked from commit 01122c8be7115fb6c5baf7db9c8a140abda17df3)

fixes #2665 - search on click in dashboard pie chart
(cherry picked from commit 2af890f2037658f86ce0856f5d5ba6d5691c2a38)