💻shorten error messages

[AnneliesVlaar]

In 'Merge first line of error messages with details #5939' the caption or message of the Execute_error and Other_error might be too long.

suggestions
Execute_error:
'Something went wrong.' instead of ' Something went wrong while running the program'

Other_error
'You can help us out by sending an email with the level and your program to hello@hedy.org. In the meantime, try something a little different. Thanks!'
instead of
'You wrote a program we weren’t expecting. If you want to help, send us an email with the level and your program at hello@hedy.org. In the meantime, try something a little different and take another look at the examples. Thanks!'