Issue20140526: note/@type="warning" support

This @type is missed because it is not exist in DITA 1.1 and introduced
in DITA 1.2.
Fixed in branch issue20140526.
Issue20140526: Sample file change

Added note/@type="warning" sample.
Issue20140621: Remove redundant '.' from title

Remove redundant '.' from part, chapter and appendix title.
(Bookmark is not fixed yet.)
Issue20140621: Remove redundant '.' from bookmark title.

Remove redundant '.' from bookmark title.
Also fixed class attribute coding mistake. ' map/navtitle ' ⇒ '
topic/navtitle '
Issue20140621: Remove toc="no" restriction from part and chapter

Remove toc="no" restriction from part and chapter. Now we can specify
toc="no" to part and chapter.