Merge pull request #1 from viperouge/develop

displayed articles as blog and added ckeditor for good ui
Merge branch 'develop' of https://github.com/viperouge/yuveweb into develop
add active admin
add role based authorization
add first and last name to signup and edit form
aythenticate only new create edit and update
provide admin longin url on sign in page
add ability to create category by admin
add friendly id gem for category
fix url issue