Bug ZSS-710: When rename sheet, cannot press "Delete" key to delete a character
Merge pull request #55 from jerrywell/ZSS-710

Bug ZSS-710: When rename sheet, cannot press "Delete" key to delete a ch...
ZSS-755: Merge branch '3.5' of github.com:jerrywell/zkspreadsheet into jerrywell-3.5

Conflicts:
	zkdoc/release-note
Merge branch 'jerrywell-3.5' into 3.5
ZSS-765 Import/export more printing setup parameters
ZSS-549 Enlarge a text to exceed its row height, the text will not be exported to PDF
ZSS-768 Support horizontal/vertical center-on-page when export to PDF
ZSS-769 Support print heading when export to PDF
fine tune
ZSS-770 Support print repeating column/row titles when export to PDF.
ZSS-771 Support Left-to-Right then Top-to-Bottom paging when export to PDF.
Bug ZSS-766: freeze panel is not working in IE10