HORNETQ-1119 Add note about backup-cluster-name. Improve replication manual entry.
Improve javadoc
Merge pull request #800 from FranciscoBorges/master

Improve manual entry for replication
Spell check manual files.

tip: use 'git diff --color-words' to view this diff.

Note (although I did not change these systematically), a formal
text should not contain contractions. Use "should not" instead of "shouldn't".
Merge pull request #801 from FranciscoBorges/master

Spell check manual files