gh-451
Added domain for Runtime Errors (i.e. Timeouts)
Fixed PHP version check
Domain name is now defined inside the object, instead of using filesystem convention
gh-451
Added checks for Kettenrad issues
gh-451
Refactoring for better checks handling
gh-451
Added checks for available memory
gh-451
Added debug info and closing handles
gh-451
Added check for backup timeout (no upload)