upgrade to rails 4

* remove spork
* add zeus
* remove compass
* must use git version for jasminerice
* new version of ember-rails-flash
configure cucumber hooks for Filesystem separately
make zeus reload factories
remove warning by VCR about too new webmock
no scopes with lambdas #rails4
install latest zeus
update_all on scope #rails4
allow assignment of relative_path
reload Factories on startup of spec
allow assignment of info_hash and filename
allow assignment of  locked_at, message
do not sort records, calls lock_function on every record, locking all
s/mock/double/ for rspec deprecation
use stub without exclaimation mark for rspec deprecation
make sass work again
remove compass dependencies
we may not need jQueryUI anymore
add trailing comma for coffeescript
must rule cucumber for zeus
use ember from ember-source gem