[tests] Add frontend functional tests
[tests] Fix for unit test
[tests] Fix common unit tests
[comment] Create migrate
Merge pull request #4 from Georgynet/feature/blog-tests

Feature/blog tests
[comment] Fix migration. Create models
Merge remote-tracking branch 'origin/master' into feature/comment
[comment] Add method in model
[test] Add tests comment
[admin] Add CRUD
[comment] Add method get comments for post
[admin] Add link for comments
[message] Add comment form