Allow semicolon after statements

[BeckmaR]

The current situation is that semicolons are only allowed between multiple statements in an action.

Valid: always / doStuff(); x = 3

Not valid: always / doStuff(); x = 3; or always / x = 3;. It would be nice if both non-valid statements would be accepted as well because currently the user always needs to edit other statements if he adds or deletes one from the current list. Also it looks pretty weird when statements are listed beneath each other and the last one arbitrarily doesn't have a semicolon.