fixes #3364 Add option to disable automatc host creation when a report is received
[REFACTOR] fixes #2967 - refactored Fact Importer

Based on Dmitri Dolguikh <dmitri@appliedlogic.ca> original patch.

- renamed original fact_importer class to fact_parser class
- moved fact handling logic to its own fact_importer class
- fact importer now assumes single-value facts
- added a uniqueness constraint on fact_values table on fact_name_id and host_id
- added tests
refs #2967 fact deleted counters did not propagate correctly.
fixes #3140 continue - apipie params fix
fixes #3279 roles edit page is long and missing a filter
Fixes #3350 - Adds title on login page
fixes #3267 - API v1 compatibility for /api/hosts
refs #2792 - Adding comments to pxe templates
fixes #3256 - include members in usergroup show
Fixes #3481 - Don't have to set a hostname for each interface, but it must be unique if it is set.
fixes #3486 - Make sure loading text is removed when chart data appears.
fixes #3498 - update to Rails 3.2.15
fixes #3312 - support /users/extlogin as a login page based on REMOTE_USER.
fixes #3312 - support logout from REMOTE_USER-based logons.
fixes #3312 - when authorize_login_delegation_auth_source_user_autocreate is set, creates the unknown authenticated user.
fixes #3312 - tweaking nil tests; private.
fixes #3312 - add tests.
fixes #3312 - factor out the post-login logic from try_to_login so that it can be used for external logins as well.