Remove "Next" button on last message in tutorial

[scootergrisen]

OpenShot 2.5.1-dev3
Windows 7

Help > Tutorial

Click Next a few time.

The last message (at the Export Video button) also have the Next button but nothing after that.
So perhaps the button should be removed on the last message so only the Hide Tutorial button remains.

[scootergrisen]

For some reason if i click the text inside the box (not a button) the tutorial goes to the next message.
Not good if you have a checkbox asking to submit data from your computer and then as you try unchecking the box you perhaps end up submitting the data instead of disabling it because you clicked 1 pixel outside the checkbox.

[stale]

Thank you so much for submitting an issue to help improve OpenShot Video Editor. We are sorry about this, but this particular issue has gone unnoticed for quite some time. To help keep the OpenShot GitHub Issue Tracker organized and focused, we must ensure that every issue is correctly labelled and triaged, to get the proper attention.

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