Temporarily add attr_accessible to fix two bugs

Fixes issue where images could not be uploaded
Fixes issue where lookups could not be updated
Add three missing assets to precompile list
Go all in with strong_parameters, break everthing
Fix confirm --> data-confirm deprecation warning
Replace all attr_accessible with strong params
Fix a deprecated finder while passing by
Fix unknown attribute error

    21) Error:
    WebsiteTest#test_should_have_an_api_key_and_default_settings_after_creation:
    ActiveRecord::UnknownAttributeError: unknown attribute: default
        app/models/website.rb:161:in `setup'
        test/models/website_test.rb:17:in `block in <class:WebsiteTest>'
Remove remaining attr_accessible lines
Remove mass_assignment_sanitizer from env config
Fix bugs introduced on switch to strong params
Fix broken pages_controller tests