Refactor: make main component more declarative...
Refactor: make main component more declarative...

... by scuttling away all of the filthy details into a new
sub-component, and by having that sub-component, named 'app-container',
consume the three main 'column' components in such a way that their
formatting in the code resembles the visual representation in the
browser.

Reefersleep/sleepydo