I've added labels to share session, closes #258
Now if there is nothing to export then button is blocked, closes #318
Now student cannot send message to lecturer longer than 300 chars, closes #320
Minutes and seconds inputs now have min 0, closes #322
I've changed selected tab in stats, closes #323
I've added labels to share session, closes #258 Now if there is nothing to export then button is blocked, closes #318 Now student cannot send message to lecturer longer than 300 chars, closes #320 Minutes and seconds inputs now have min 0, closes #322 I've changed selected tab in stats, closes #323