Fixes #6222 - Auto Enables dynflow console for dev mode

After a Katello reset we'd ideally like dynflow foreman tasks console to
be enabled (instead of having to go to Settings -> Foreman Tasks ->
Enable Dynflow Console).
This commit enables that.
Fixes #6221: Content host errata and host collection bulk actions no longer 400.

Content host errata and host collection bulk actions when entered via host
collection links would throw 400 errors and display no results. This was due
in part to attempting to fetch errata without content hosts populated and
the parameter to disable initial errata loading incorrectly specified.

Also, this changes the way search works on nutupane instances by using
'search' as the default in the URL unless an action was supplied to Nutupane.
If the action is supplied, for example 'availableErrata', then the search term
becomes 'availableErrataSearch'. This has the effect of fixing the coupling
of multiple nutupane search boxes to one another.
Merge pull request #4270 from ehelms/fixes-6221

Fixes #6221: Content host errata and host collection bulk actions no lon...
Merge pull request #4271 from parthaa/dynflow-dev

Fixes #6222 - Auto Enables dynflow console for dev mode
Fixes #6242 - remove unused distributor from rabl to fix error.

There was an HTTP 500 on subscription show if you were not admin
(or didn't have the distributor read permission) because distributor
was still referenced from the rabl.  This commit removes the reference.
Merge pull request #4275 from waldenraines/6242

Fixes #6242 - remove unused distributor from rabl to fix error.
Fixes #5503/BZ1102315 - restrict UI interactions to actual permissions.