Improve and correct behaviours "Block the solving/closing of a the ticket if task do to"

[vonick]

1. Correct the translation : "Block the solving/closing of a the ticket if task do to" by "Block the solving/closing of a the ticket if it remains a task to do"
2. Would it be possible to display or go back up to the current task that has not been validated directly when the solution button is pressed and the message above appears, for exemple when the cross is pressed to close this window, the current task would be displayed directly or window positionned on the first task that remains unchecked.