added high_voltage gem
added websites controller
-- currently quite stuck, because website model can't be created without
active_admin
Merge branch 'master' into addedHighVoltage

Conflicts:
	Gemfile
	Gemfile.lock
added custom ignores to match static websites
implemented static file serving in websites controller
implemented custom_authentication in websites controller
refactored website model unit test
added cucumber feature to ensure that only admin and dedicated users can
access static websites
provided static html file for test purposes