Use array union operator to get rid of the duplicates.

https://bugzilla.redhat.com/show_bug.cgi?id=1160848
Add test cases for the duplicate columns.

https://bugzilla.redhat.com/show_bug.cgi?id=1160848
region_number/region_description are only intended to be declared on the class immediately under AR::Base.

https://bugzilla.redhat.com/show_bug.cgi?id=1160848
This handling of blackbox events is not needed.
Corrected status and state dictionary entries.

These were showing up either incorrectly or as duplicates in the field lists in reporting and the expression editor.

Issue #1114
https://bugzilla.redhat.com/show_bug.cgi?id=1160848
Merge pull request #1185 from dclarizio/correct_status_and_state_dictionary_entries

Corrected status and state dictionary entries.
Merge pull request #1184 from jrafanie/delete_blackbox_event_handling

This handling of blackbox events is not needed.
Git ignore archived log files

[skip ci]
Merge pull request #1187 from brandondunne/ignore_gzipped_log_files

Git ignore archived log files
Fixed error on workers tab.

Fixed undefined method `[]' for #<VMDB::Config:0x00000006f06a80> when editing any field on workers tab. We cannot set auth from new[:authentication], @edit[:new] is a config object on the Workers tab. This broke with changes for https://github.com/ManageIQ/manageiq/pull/954
Merge pull request #1114 from lfu/double_columns_1160848

Use array union operator to remove the duplicates.
Merge pull request #1188 from h-kataria/workers_tab_edit_fix

Fixed error on workers tab.