Merge pull request #1088 from clebertsuconic/2.3.x

https://bugzilla.redhat.com/show_bug.cgi?id=965826 / https://issues.jboss.org/browse/HORNETQ-1211 - just changing toString on passwords
HORNETQ-1205 Fix documentation links
Merge pull request #1100 from FranciscoBorges/2.3.x

HORNETQ-1205 Fix documentation links
HORNETQ-1219 Fix inconsistent 'null' property behavior.

Spec says setObjectProperty(...) should be the same as 'typed' alternatives.
Notice that our implementation of the typed variants do not ignore 'null'
values.
Merge pull request #1104 from FranciscoBorges/2.3.x

HORNETQ-1219 Fix inconsistent 'null' property behavior.
Merge pull request #1108 from clebertsuconic/2.3.x

fixing an API that I broke after https://issues.jboss.org/browse/HORNETQ-1163