add specs for posts
Merge branch 'master' into add-specs-for-post-and-comments

Conflicts:
	app/views/posts/_create_edit_buttons.html.slim
	app/views/posts/_description.html.slim
	app/views/posts/show.html.slim
fix specs
Merge pull request #8 from DamirMakhmutov/add-spec-for-posts

Add spec for posts [finished #84989366]