fixed deprecation warnings for Faker ...

updated to use new Webdrivers gem instead of chromedriver. Also added check to prevent redefining VerionableModel

renamed versionable_model

rebased onto development ...

stat_created_plan_spec finished

stats table using bigint. StatJoinedUser spec done

csvable_spec done

org_date_rangeable_spec done

Actions::StatCreatedPlan::Generate spec half way done

Actions::StatCreatedPlan::Generate rspec done

Actions::StatJoinedUser::Generate spec finished

Role.with_access_flags instead of access_values_for method