Errors and exceptions in strategy

[Benjamin Cordes]

Code in SecondaryPegUtils is very long, and nested with if else. Leaving this open for discussion before changing anything. In Primary this is already implemented, i.e. the following style:

if (ErrorCondition) {
//return error
}

//continue with normal operation

versus

if (!Error) {
//normal operation
//..
//..
//..
} else {
error
}