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...

fixes #7876 - filter Organization.my_organizations by org, not locaion

Refs #3809 - Use parentheses in method definitions

Refs #3809 - Remove rubocop TODOs

Removed the following TODOs so that cops for these will run from now on:

Lint/AmbiguousOperator, DefEndAlignment, DeprecatedClassMethods
EnsureReturn, RequireParentheses, Void, BlockAlignment, EndAlignment,
UselessAccessModifier,...

fixes #7163 - on host's edit page, show the source for the value of puppet class parameters.

fixes #4386 - gem friendly_id to simplify find by id, name, label, etc

Fixes #6695: Adding two OS parameters with same name should raise an error

Fixes #215: Parameters can be saved without a value

fixes #5141 - User unable to access children taxonomies on switcher

fixes #3914 - set current taxonomies on login from user defaults

Fixes #4486 - organization not searchable by name

fixes #4393 - rename ancestry label to title

fixes #3912 - add inheritance for locations / organizations

fixes #3099 - Adding parameters to locations and organizations

fixes #2411 - move STI models in /models and /lib/foreman/models to sub-folders