Add documentation for extensions of Qml Performance Monitor

Can be enabled by passing LICENSE_TYPE=enterprise to qmake.

Change-Id: I49044c2425a056980b6e9f8377e6a33c1beaca5a
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Debugger: Small dumper cleanups and consolidation

Change-Id: I1511317f8389963e5c98230d6885311a84c2dc25
Reviewed-by: hjk <hjk121@nokiamail.com>