Improve UX

[mvorisek]

- You should really speed up these slow tests (>500ms)...
+ You should really speed up these slow tests (>500 ms)...
- 1. 84059ms to run Atk4\Data\Tests\ReferenceSqlTest:testHasOneTitleSet
+ 1. 84_059 ms to run Atk4\Data\Tests\ReferenceSqlTest:testHasOneTitleSet
- 2. 58549ms to run Atk4\Data\Tests\Util\DeepCopyTest:testBasic
+ 2. 58_549 ms to run Atk4\Data\Tests\Util\DeepCopyTest:testBasic

to make large values easier to read, also, there should be a space between value and unit