[#11] Update to latest dgrid release.
[#11] Add DGrid example to a new tab.
[#11] Ensure grid plays nicely in dijit lifecycle.
[#11] Add initial grid styling.
[#11] Mixin grid selection and keyboard support.
[#11] Distinguish header from odd-row more.
[#11] Use font based icons for sort arrows.
[#11] Update put-selector and xstyle.
[#11] Fix trailing comma errors.
[#11] Fix build related errors following inclusion of dgrid styling.
Merge pull request #71 from thesociable/11_dgrid_example

11 dgrid example