Bugfix #914. Clicking on scrollbars closes cell editor.
Bugfix #527. Fixed changing column position when not all columns are visible.
Fix hosrizontal scrollbar handle position
Test for #924 issue
Bugfix #909. Restored previous way of computing horizontal scrollbar handle width.
Horizontal scrollbar handle width is now computed using formula:
(numberOfVisibleColumns / numberOfAllColumns) * horizontalScrollbarWidth
Bugfix #934. Fixed Array.filter shim. It now handles NodeList objects in IE8 correctly.
Fixed IE8 tests running via Sauce Labs service
Bugfix #917. Column properties are now properly translated when displayed column order is different than the order stored in datamap (i.e. when sorting is applied).
Bugfix #936. removeRow extension can now be enabled and disabled using updateSettings method.
Bugfix #936. contextMenu plugin can now be enabled and disabled using updateSettings method.
Bugfix #498. Fixed Handsontable CSS styles and jQuery UI styles interference.
Changed all boolean casts that were using Boolean() function to use double negation (!!), which is faster:  http://stackoverflow.com/questions/15335452/why-is-boolean-so-slow-in-javascript
Merge branch 'feature/bugfix-#527' into develop
Merge branch 'feature/bugfix-#914' into develop
Merge branch 'feature/bugfix-#909' into develop
Merge branch 'feature/bugfix-#934' into develop
Merge branch 'feature/bugfix-#936' into develop
Merge branch 'feature/bugfix-#917' into develop
Merge branch 'feature/bugfix-#498' into develop
Testfix for autoColumnSizeSpec after applying bugfix #498.