updated apc widget description
updated t widget method description
added notice for widget debug mode
added tips for autoload class
fixed namespace delimiter typo
added db method description
fixed example typo
added example to create a custom widget and usage for aliaes
fixed code highlight error
added simple example for import options
Added  paramter for import method
fixed is widget example error
fixed comment typo
Removed WidgetAwareInterface and AbstractWidgetAware class, use widget() is more convenient
added docblock for assertIsSubset method
removed error annotation
fixed method docblock error
simplfied app widget action method
added table to dis all db query methods
updated call widget doc