add test case
replace deprecated express3-handlebars
replace deprecated express3-handlebars
escaped from callback hell
escaped from callback hell
[apiv1] groups and device endpoint
add daterange directive
use json web token for authorize
added events router
change to token based authorization mechanism
add event summary report
merge
merged api v1
merged api v1
fix angular version
Merge branch 'apiv1' into dev
fix group list in map page
add a d3 chart directive
send user's groups only
add line and pie chart