fixes #3917 - replace protected_attrs with strong parameters

Filtering of attributes has moved from the protected_attributes gem to
strong parameters in controller concerns, to be in line with current
Rails recommendations.

Concerns are shared between UI and both API controllers and list the...

Fixes #15336 - Enables proper deletion of Orgs

Prior to this commit if you had an Org/Location with a host and tried to
the delete the Org. You would end up with an error that looks like

<Org> is used by <Host> (RuntimeError)

Basic error is these 2 areas...

Fixes #7568 - Use attr_accessible for Rails 4 upgrade

Refs #11846 - Specify join_tables for taxonomies

Missed this as part of the previous fix for 11846. As a brief reminder,
it's necessary to specify the join table for habtm associations on Rails
4, and it doesn't hurt on Rails 3, so we should do it before the upgrade.

Fixes #11650 - show global parameter value inherited from parent taxonomy

Refs #3809 - Stabby lambda syntax for oneliners

I started by spotting log.rb which didn't have a lambda wrapping its
default scope, as needed by Rails 4. Since the style guide and most
Rails 4 documents used the stabby lambda, I turned on the cop so that we...

Refs #3809 - Remove cops for empty lines

Fixes #8401: n+1 query on group parameters host edit

Hostgroup tries to eager load the group parameters but there's an error
in the code that renders the eager loading useless.

Fixes #4613 - Remove duplicate scoped search from taxonomies

Fixes #6710 - unicode characters in url parameters

Original methods to_param defined on resources called name.parameterize
to get rid of url-unsafe characters. This function unfortunately also
stripped off unicode characters.

Changes:
- parameterization extracted into a separate module Parameterizable...