add follows
remove completes goal in user goals
add methd to get goals completes
add new method to get the goals for one user without private goals
add new method to get the completes goals for one user without privetes goals
add friends_ids  attribute in user serielizer
add serializer user_step and fix the error when add one follow_user
add follow_me and follows_ids attributes for user serializer
add unfollow route
change image attribute data
add lvl, points and require_points attributes in random user
fix posts problem
add new methods and routes for get goal's timeline
add route to get motivationals comments for one goal