Move Ui code model support into QtSupport

* Move basic ui code model support from CppTools into QtSupport
* Use Kit infrastructure to retrieve uicCommand and environment
* Remove specialization for cmake projects (no longer needed)
* Remove specialization for qmake based projects (no longer needed)

Change-Id: I8569cc01acb46a540883c2da235d169bebf7db39
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/cpptools/cpptools.pro

@@ -19,7 +19,6 @@ HEADERS += completionsettingspage.h \
     cppfindreferences.h \
     cppcodeformatter.h \
     symbolsfindfilter.h \
-    uicodecompletionsupport.h \
     insertionpointlocator.h \
     cpprefactoringchanges.h \
     abstracteditorsupport.h \
@@ -65,7 +64,6 @@ SOURCES += completionsettingspage.cpp \
     cppfindreferences.cpp \
     cppcodeformatter.cpp \
     symbolsfindfilter.cpp \
-    uicodecompletionsupport.cpp \
     insertionpointlocator.cpp \
     cpprefactoringchanges.cpp \
     cppcompletionassist.cpp \