Adding New Panel for Multiseries Chart
adding new panel for multiseries chart
Added multiseries panel
handled missing values in multiseries chart
Merge branch 'develop' of https://github.com/Kareem-Fikry/banana into Kareem-Fikry-develop

Conflicts:
	src/app/dashboards/default.json
	src/app/panels/histogram/module.js
	src/app/panels/map/module.js
	src/app/panels/query/editor.html
	src/app/panels/query/module.js
	src/app/panels/terms/module.js
	src/app/services/dashboard.js
	src/app/services/filterSrv.js
	src/app/services/querySrv.js
Merge branch 'Kareem-Fikry-develop' into develop