correct flawed nesting of if/else

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
ensure buffer is not too large if all content is removed

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
keep from ghosting the flyweighter child when calling 'render' on previously rendered list

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
Merge pull request #495 from enyojs/post-9-updates

Multiple fixes for pre-10

Reviewed-By: Ben Combee (ben.combee@lge.com)
Update version string to 2.3.0-pre.10