upgrade project settings for 4.6 and flip on new warnings
cleanup & refactor NSManagedObjectContextAdditions
cleanup & refactor NSManagedObjectAdditions
cleanup & refactor NSArrayAdditions
remove CW_SAFE_ERROR as it no longer works under latest clang
rename CWErrorSet -> CWErrorTrap and add CWErrorSet()
removing usage of CW_SAFE_ERROR and switching with CWErrorSet()
switch CWErrorSet() to CWErrorTrap()
removing usage of CW_SAFE_ERROR