add course work instagramm clone on rails

Запрос на слияние 'homework_lecture_9' (#10) из homework_lecture_9 в master

add devise gem to lab reports homework

fix validation in the model and strong params in the controller

add tests for controllers and models

add nested routing

fix the name of the columns in the user database

fixed views

add a private method for a repeating line

add devise gem to lab reports homework

fix controller added else condition