CppTools: Always check for a valid BuiltinEditorDocumentParser*

This fixes a crash if the include hierarchy sidebar is invoked with the
clang code model. BuiltinEditorDocumentParser::get(editorFilePath)
returns 0 in that case.

Task-number: QTCREATORBUG-13553
Change-Id: I9292691c8156bdaaffcac1c3864201ba8a6cbdef
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
CppTools: Fix include hierarchy for clang code model

This makes the editor document snapshot accessible through
BaseEditorDocumentProcessor since we need it for the include hierarchy
if the the clang code model is activated.

Task-number: QTCREATORBUG-13553
Change-Id: I7214cc578d05fe5cad6e12b4d29fe6f840a88e8d
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
Doc: update QML emulation layer options

A check box was divided into two radio buttons.

Change-Id: I0439e038be2508a62811a5200c10a07367e85576
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>