added float to widgetDef
removed hardcoded height from less file
Merge branch 'dt-dev' into last_n_events.MLHR-1116
updated height, width of AppInstancePageView widgets, fetching last n events
MLHR-1119 #resolve #comment added check before killing application master container
moved position of datetime picker in stramevents
added error notification for date range
added storage to stram events
fixed getting last n events
fixed d3 issue
updated deps, viewMode now tracked by localStorage
updated travis build
Merge pull request #13 from DataTorrent/last_n_events.MLHR-1116

Updated stram events widget to retrieve last n events in tail mode