add prototype view serialized data, add drag handles

...ports/static/reports/app/directives/groupItemContainer.js

.../reports/static/reports/app/directives/groupPanelItems.js

...eb/reports/static/reports/app/directives/groupPlotItem.js

...b/reports/static/reports/app/directives/groupTableItem.js

...eb/reports/static/reports/app/directives/groupTextItem.js

...orts/static/reports/app/directives/groupViewSerialized.js

...web/reports/static/reports/app/directives/groupsLayout.js

beat/web/reports/templates/reports/report.html