Handle 'mouse-event' attribute differently according to configuration of web-provider...

Handle 'mouse-event' attribute differently according to configuration of web-provider's plugin

[Issue#] N/A
[Problem] For general appwidgets, value of 'mouse-event' isn't unconditionally indicated as false to its webapp's manifest(xml)
[Cause] wrt-installer didn't distinguish general appwidgets and commericalized appwidgets.
[Solution] For only commercialized appwidget, wrt-installer adds value of 'mouse-event' as 'true' to its manifest(xml),
           if value of 'mouse-event' is 'true' on its webapp's config.xml.
[SCMRequest] First, livebox.web-provider-1.10 must be merged to obs server.

Change-Id: Ia1d50746eb1245ee4c279eb68132a69a758e6fb2