Use constant and helper to load erb search_form.
This DRYs up the code a bit, and ensures it doesn't break when this gem
is used in concert with New Relic's ruby agent, which futzes with
__FILE__.
Locking rubocop in v2.x-stable and regenerating config
Merge branch 'Headlinerfm-search-form-fix' into v2.x-stable
Merge branch 'v2.x-stable' into v3.x-stable

Conflicts:
	.rubocop.yml
	.rubocop_todo.yml
	lib/resque/scheduler/server/views/delayed.erb
	lib/resque/scheduler/server/views/search.erb
	lib/resque_scheduler/server.rb
	resque-scheduler.gemspec
Removing now-unused method, ensuring partials don't use layout