Revert "Revert "remove ability to create users from patron ability""
Merge pull request #829 from YaleSTC/revert-828-revert-824-823_user_perm

Revert "Revert "remove ability to create users from patron ability""
add conditional for view mode
Merge pull request #831 from YaleSTC/830_hotfix

add conditional for view mode
add #823 and #830 to changelog
tagging 3.4.0-final
bump Ruby version to 2.1.2 for tomorrow's production release
add requirements to cart validations
remove unnecessary newline