Replaces admin views from ERB to HAML
Admin layout with bootstrap, header and footer
Admin sign in view styles

Fix sign in admin session helper button copy
Implements new dashboard for admin
Admin backend redesign with sidebar
Removes unused admin shared views
Moves API keys to the API admin section
Fixes error with sidebar showing when no admin was signed in
Adds design to Admin customize reports view
Admin categories views design
Fixes admin layout responsiveness for inset content
Updates README.md 

Updates the new structure for README
Merge pull request #138 from eddie-ruva/features/admin-design

Add admin dashboard redesign