[UI] Add a compilation counter with timestamp

[mariopesch]

Is your feature request related to a problem? Please describe.
Often de programm is downloaded and compiler more the one time. As the Name of the project does not change one has a lot of same files in the download folder

Describe the solution you'd like
Add a compilation counter and a version number to the downloaded programm, to make it easier to identify the last version in the download folder