Improved work with guest sessions (it creates for <5 min, but may be prolonged on next page).
Added methods User::set_user_permission() ::del_user_permission()

System version 0.266
modules:
Blogs 0.042
Comments 0.006
Cron 0.004
HybridAuth 2.1.1-cs19
OAuth2 0.013
Static_pages 0.025
plugins:
Admin_default_theme 0.001
TinyMCE 4.0-cs1