Allowed the linechart to populate on its own after a dataset is connected.  When running as widgets, this may load before something else that triggers a filter update.  This may cause the single page app to redraw the line chart a couple times on initial data selection.  Additionally, added widget descriptor files for each widget page.
Merge branch 'angular-widgets' of https://github.com/NextCenturyCorporation/neon into angular-widgets