Level 0 completed: Hello World

So we've got ourselves a 'console' (quite ugly and terribly, but still)
which can (in theory) accepts commands and (in theory) display output.

(In practice: ATM it doesn't do anything with the input and displays the same
hardcoded message every time.)
output printing method
Sketching a command parsing functionality
And some more!
TDD: writing the tests to define Parser
rudimentary tests
drafting the functionality
updated diary
Yay tests run! adding single activity works!
view activities ( ) command implemented!

it also works!!

also, adjusted fxml (field -> textarea)
Merge branch 'barebones-text-ui'

IT'S ALIVE!!!

You can add single activities and view them!

Oh the joy!