Improve timer interval display (#3096)

[AntoineQ1]

To improve the displayed timer accuracy, I carried out the following changes :

1. The frequency of the timer has been updated from 1.0 second to 0.3 second
2. The timer is reset with each new card

Resolves #3096

[dae]

Thank you!

Minor thought: how about 333 as the delay, so that the timer ends up getting updated as close to a second as possible?

[AntoineQ1]

You're welcome :)

Great idea, I just updated the code accordingly !

[dae]

Sorry, I feel silly for not thinking of this earlier, but do we even need to increase the timer resolution? Since you're starting the timer as the question is shown now, perhaps we could simply refresh every 1000ms after that?

[AntoineQ1]

No problem ! Indeed, after some tests, it seems it's not necessary.
Also, it helped me discover that the timer didn't reset to 0 immediatly when a new card was displayed (I didn't see it before because it was only 0.3 / 0.333 seconds later), so I added a time update just after the new question is shown to account for that.

[dae]

Great - thanks again!