fixes #11127 - show error when rebuild reboot fails

Fixes #17483 - async task creation returns 202

Includes task link in response

Fixes #17296 - Add setting access_unattended_without_build

Fixes #16935 - Allow : & . device ID if there isnt one set

Fixes #15779 - make background processing available

Fixes #17343 - set deep munge config off

deep_munge was introduced as a solution to keep
Rails secure by default which results in
'empty array becomes nil in params'.
Thats why, set deep_munge config off in application.rb.
Also, added changes which will cast param argument to string...

Fixes #17468 - build PXE returns error with no TFTP proxies

Build PXE menu responds with no error when no TFTP
proxies are found, it renders an error message in the UI.

Fixes #17441 - override all parameters permission changed to edit

Fixes #17461 - use singular form for missing os

Fixes #17458 - include user group admins