Warn people that Alpha and Beta versions are not hinished

[rafal-molotkiewicz]

Is your feature request related to a problem? Please describe.
A few people I know downloaded new Alpha to use new features like multiple beds and fuzzy skin. Then they were disappointed that there are errors and were saying "this should be fixed before release!". Clearly there is a lack of understanding what Alpha is.

Describe the solution you'd like
On the first run of an Alpha or Beta version, there should be a message box saying "This is an Alpha version for testing purposes only. Bugs are expected. Do you want to use it anyway?". Yes should start the program. No should close it, maybe open a link to the latest Release version.

Describe how it would work
As above. A field in settings to prevent the box from opening multiple times, a few lines of code.

Describe alternatives you've considered
Warning on the download website is not possible because you use github. Github assumes higher software development skill level than slicer users generally have.

Additional context
People complaining about Alpha version doing what Alpha versions are expected to do make me sad.

[SachCZ]

Hello @rafal-molotkiewicz, thank you for your suggestion. I agree that it indeed is sad.