Test/docker

See merge request !32

This needs a more thorough treatment.

get_summ_subset: Close stale FIXME issues after so many changes.

app_config_and_status: Scale down from TODO/FIXME to TODO.

mk_comp_tab: Remove worked around FIXME.

make_eic_ms1_plot: Removed FIXME related to ms1_rt. This needs a proper rework, but does not have much impact at the moment.

rf_get_cindex: Removed FIXME which seems to not trigger any weird behaviour yet.

output$comp_table: Scale down from TODO/FIXME to TODO for plotting the compound list.

... and others ...

Also adapted metfrag subsystem to new data model.

* shiny-ui-base(gen_cindex, gen_summ_subset): Adapted. Function
`gen_cindex' now returns less confusing output.

* plotting(get_data_from_key): Argument `outcols' now has a default
NULL value.

Cleaned some more erroneous MS2 spectra (for precid) by removing intensity NAs from cgram_ms1 when using cgram_ms1 for preserving fine results.

test-data-model: New test suite for data-model.R