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cleaning unused gems and upgrade to Ruby v2.4.1
fix node modules issues when running the upgrade
update travis.yml to Ruby v2.4.1
Remove Friendly Id gem and related code references.

Upgrading the Devise, Omniauth and Pundit gems and removing version numbers
Upgrading views related gems like recaptcha, formtastic, dragonfly
Upgrade development group gems like kaminari, byebug, better_errors, web-console, binding_of_caller, rack-mini-profiler
Upgrade test group gems like racktest, webmock, sqlite, simplecov

Upgrading Exporting and Internalization gems in the Gemfile

Ruby upgrade to 2.4.4
Fix assert nil warnings in tests

reremoved administrate gem

fixed merge conflicts