Revert "first commit with gem devise to Users on the blog"

This reverts commit b29de139e1dd3f12c5ec5df913e5226699c8de6d.
gem devise installed
to heroku configs
first  commit to views
config.secret_key
firs commit for login authenticate
solved bug
bla
bla
bla
first commit to User posts
input type login changed from email type to text type
show username's post
add user posts relation