Fixed issue with ExportConfig
- Typo menuitems pactched to menuItems.

Signed-off-by: Sachin Shekhar R <sachin.r.r@gmail.com>
Fixed AmPieChart, AmSlicedChart and AmChart
- getJso , jso, WrapperUtils.unwrap not the same in JSNI as seen in
getGroupPercent code in AmSlicedChart.
- getJso in AmPieChart cast to AmPieCharJSO and used for
setGroupedPulled and getGroupedPulled demonstrates non requirement of
JSNI code in AmPieChart for setter and getters.
Fix AmPieChart and AmSlicedChart
- Remove JSNI code for getters and setters.
- Use JSO wrapper invocation for getters and setters.

Signed-off-by: Sachin Shekhar R <sachin.r.r@gmail.com>