remove caching because it doesn't seem to work well with rails 4
add helpers to pages controller
add helpers needed to render the pages in the default theme
fix admin override
remove spree-core because it causes cart to blow up https://github.com/spree/spree/issues/4024
convert to strong params for rails 4
This actually wasn't the problem.
Revert "remove spree-core because it causes cart to blow up https://github.com/spree/spree/issues/4024"

This reverts commit 7e71c70b9508926b7f3e66499be3c087887d0ef8.
updates complete for spree 2.1 & rails 4
specify more accurate spree_core gem version
Merge pull request #13 from onyxrev/master

Updates for compatibility with Rails 4 and Spree 2.1