rm internalErrException handle in BasicController
use Exception as general handler
rm ng-ranbow
fix no-footer style
Merge pull request #214 from janzhongi/loadingRequest

enhance backend error handle & rm sweetalert
Merge branch 'staging' of https://github.com/KylinOLAP/Kylin into error_handling
Merge pull request #215 from luffy-xiao/error_handling

Customize Messenger widget
rm listen 500 in config.js & listener.js
Merge branch 'staging' of https://github.com/KylinOLAP/Kylin into error_handling
Merge pull request #218 from janzhongi/loadingRequest

rm listen 500 in config.js & listener.js
refine cube action result notifcation