Fixing http://jira2.lgsvl.com/browse/BHV-6774

Dual focus on pressing left key while hover cursor over the paging down control of DataGridList
To solve this issue, add / remove "hover" class from paging controls when pointer mode changes.

DCO-1.1-Signed-Off-By: Kunmyon Choi <kunmyon.choi@lge.com>
Merge pull request #1268 from enyojs/BHV-6774-kunmyonchoi

BHV-6774: add / remove "hover" class from paging controls when pointer mode changes

Looks good!

Reviewed-by: Aaron Tam (aaron.tam@lge.com)