Fix multiple grids in one page horizontal scrolling
Merge pull request #43 from turbosasa/master

Fix multiple grids in one page horizontal scrolling
'null' or 'undefined' cellText show in grid as empty string
typeof check for undefined
Merge pull request #45 from turbosasa/empty-string-cellText

cellText typeof check for undefined
Do not show footer if there is no data for showing.

Fix for issue #46
Merge pull request #48 from turbosasa/dont-show-footer

Do not show footer if there is no data for showing.