#806 Добавлена примитивная поддержка NestedSets в комментариях. Итерация номер два.
Добавлен недостающий импорт NestedSetsBehavior
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'vasiliy-pdk-avatar_upload' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2
Merge branch 'master' into nestedset-comments-v2