added banner models
fixed space
fixed string
fixed
added banner controllers
fixed "@uses" tags
fixed "@uses" tags
some fixes
fixed bug
added validation rule
fixed typo
some fixes
fixed typos
added BannerManager utility
fixed
fixed typo
added cache configuration for banners
fixed banners controllers and models. Added banners views
added "isAuthorized()" method. Only admin can manage banners
updated documentation