Perform partial code cleanup pass

.gitignore

Gemfile

...javascripts/foreman_passwordstate/host_edit_extensions.js

...foreman_passwordstate/hostgroups_controller_extensions.rb

...erns/foreman_passwordstate/hosts_controller_extensions.rb

...concerns/foreman_passwordstate/host_managed_extensions.rb

...ls/concerns/foreman_passwordstate/hostgroup_extensions.rb

app/models/foreman_passwordstate/passwordstate_host_facet.rb

app/models/orchestration/passwordstate.rb

app/overrides/add_host_passwords_tab.rb

app/overrides/add_host_passwordstate_password_choice.rb

app/overrides/add_host_passwordstate_server.rb

app/overrides/add_hostgroup_passwordstate_password_choice.rb

...iews/foreman_passwordstate/_host_password_choice.html.erb

foreman_passwordstate.gemspec

lib/foreman_passwordstate/engine.rb

lib/tasks/foreman_passwordstate_tasks.rake

test/factories/host.rb

test/factories/passwordstate_host_facet.rb

test/factories/passwordstate_password_list.rb