Improves bless documentation
Improves bless documentation

Including examples on how it calls superclass, or it calls BUILD in
subclasses. Also some minor changes here and there. Closes #2077

dmaestro/doc,MasterDuke17/doc,tbrowder/doc,stmuk/doc,perl6/doc,jonathanstowe/doc,jonathanstowe/doc,stmuk/doc,stmuk/doc,stmuk/doc,MasterDuke17/doc,dmaestro/doc,perl6/doc,dmaestro/doc,jonathanstowe/doc,perl6/doc,jonathanstowe/doc,MasterDuke17/doc,dmaestro/doc,jonathanstowe/doc,tbrowder/doc,perl6/doc,perl6/doc,MasterDuke17/doc,tbrowder/doc,dmaestro/doc,stmuk/doc,tbrowder/doc