Mod: font-awesome  Add: underscore
Mod: multi datasources for widget spline

Mod: multi datasources for widget spline
Mod: widget link to stat
Mod: style of widget number
Mod: multi datasource for Column, Pie
Mod: complete label of Column, Pie

add dimension information in label
Add: alert when dimension value miss
Del: delete timeInterval
Mod: link to stat
Mod: style
Merge pull request #60 from slycloud/master

Mod: multi datasources for widget