Fix for deface 1.0 in fix_highlighting_of_products_tab template

Fixes #82
Specify branch for spree Gemfile dependencies so we can use local bundle ones
Use reorder for Review.oldest_first scope to remove default scope order
Switch to using poltergeist so build will run on our CI server

Conflicts:
	spree_reviews.gemspec
Bump Capybara to 2.1.x.