refs #1588 : bugfix : forwarded from 1.9 to 2.0 tree.
refs #1618 : link added.
Merge branch '2.0'
refs #1606 : added: blocking comment on comment now works.
 refs #1623 : fixed to reference correct category (page = -3)
refs #514 : version number modified.
refs #514: version tag modified
refs #514: bugfix: merging process created error.
refs #514: bugfix: upstream causes name confliction of JQUERY external path. modified.
refs #514: version tag modified
refs #514: year tag modified (master)
refs 607: bugfix: broken merges
 refs #1629 : Security message added.

 - Instuction to change permission with command.
 refs #1629 : Security message added.

 - Instuction to change permission with command.
 refs #1628 : privte comment added.

 - Private comment checkbox added
 - Behavior checking / design confirmation is needed.
 refs #1628 : privte comment added.

 - Private comment checkbox added
 - Behavior checking / design confirmation is needed.
refs #1626: bugfix: change code to match webslice function
refs #1626: bugfix: change code to match webslice function
 refs #1604 : bugfix : remove unused link at title.
 refs #1604 : bugfix : remove unused link at title.