WidgetHandle removal - part 3.

WidgetHandle removal - part 3.

[Issue#]       N/A
[Feature]      Removes widget handle usages: debug, widget info at installtion success etc.
[Cause]        N/A
[Solution]     N/A
[Verification] Install, reinstall, uninstall any widget.
[SCMRequest]   Depends on wrt-commons chanegs:
http://slp-info.sec.samsung.net/gerrit/#/c/105113/

Changes from commons differs only with widget construction from pkgname which is tested in previous commits, so no advanced method of verification is needed.

Change-Id: Ib920c3af09672a8a3dde62a357618083e5a6aa08