Reverse then and else body in domain if checks

[Varagos]

Subject of the issue

Change if checks inside useCase's execute method body.

Expected behaviour

Actual behaviour

Suggested solutions?

Expression should be reversed, and then-else bodies swapped probably If then statement returns, we don't need to wrap the remaining code in an else statement, to avoid redundant nested if statements.

[sardounis]

Its seems here there are two different issues... initially the problem with title, and a secondary improvement for the if statements. It seems there was a reason at the moment it was developed that way-to be able to have multiple return OKs. At the moment it seems there is no need for it, so we can discuss it as an improvement.