typing: Not allowing copy-paste (or at least making sure it's properly logged)

In the typing test (https://languagelab.be/tests/typing), it's currently possible to copy-paste lines.

If it's easy to implement, let's consider blocking Ctrl+C/V.

But I suspect it's too complicated. In that case, not a big deal, but it should be logged appropriately (not as if the user had typed all those letters so quickly).

changed milestone to %0.4: Tests and studies improvements

added Studies & tests label

From my understanding, it's pretty straightforward to block (basic) copy/paste, so we could probably do so. But anyway, if the user do so, the database will not log as if he wrote every letter, but it will record the keys it pressed, so in this case, control and V:

mentioned in issue #166

marked this issue as related to #166