api,app,shiny-ui-base: Add report creation to GUI

summ_subset control is now used only during report generation in GUI.

* api(report): Updated.

* shiny-ui-base(sortsubset_b): Removed observer, because we want
defaults.

(presc_b): Updated observer. Does sorting and subsetting, now when
they are predefined.

(make_report_b): Add new observer. Creates a report.

* app(sortsubset_b): Remove control.

(make_report_b): Add control.