upgrade SemanticUI to v0.11.0
add menu management feature
add menu preview feature
limit the number of menu items
add Cache class
add wechat library
API retry logic
autoload Wechat
add support for sorting news
improve workflow for adding/editing news
fix Undefined property
add support for flash messages
add support for create custom menu
search news by keyword_id
add support for publishing news in the future
add confirmation for news deletion
Merge branch 'feature/menu' into develop