updated Gemfile for Rails4
removed depreciated finders
added block to default_scope
use SECRET_KEY_BASE instead of SECRET_TOKEN
removed obsolete seed files
updated application.rb for Rails4
updated routes for Rails4
removed obsolete finders
removed obsolete attr_accessible
use block for default_scope
pluck_all is no longer necessary, as pluck takes multiple column names in Rails 4
updated broken links in documentation, and better handling of missing pages
use static routes for status and heartbeat page
move falcon into assets pipeline
use new finder syntax
renamed views to use underscore instead of hyphen
added assets initializer for custom javascripts
use new finder syntax in cucumber steps
use new scope syntax
adapt markdown layout to changes in bootstrap 3.2