Rename "Qt Application Project" to "Qt C++ Project"

This is more consistent with "Qt Quick Project". Also,
capitalize all sections (regression from previous commit).

src/plugins/coreplugin/coreconstants.h

@@ -224,7 +224,7 @@ const char * const ICON_MAGNIFIER        = ":/core/images/magnifier.png";
 const char * const ICON_TOGGLE_SIDEBAR   = ":/core/images/sidebaricon.png";
 
 const char * const WIZARD_CATEGORY_QT = "R.Qt";
-const char * const WIZARD_TR_CATEGORY_QT = QT_TRANSLATE_NOOP("Core", "Qt files and classes");
+const char * const WIZARD_TR_CATEGORY_QT = QT_TRANSLATE_NOOP("Core", "Qt Files and Classes");
 
 const char * const SETTINGS_CATEGORY_CORE = "A.Core";
 const char * const SETTINGS_CATEGORY_CORE_ICON = ":/core/images/category_core.png";

src/plugins/cppeditor/cppeditorconstants.h

@@ -60,7 +60,7 @@ const char * const CPP_SOURCE_MIMETYPE = "text/x-c++src";
 const char * const CPP_HEADER_MIMETYPE = "text/x-c++hdr";
 
 const char * const WIZARD_CATEGORY = "O.C++";
-const char * const WIZARD_TR_CATEGORY = QT_TRANSLATE_NOOP("CppEditor", "C++ files and classes");
+const char * const WIZARD_TR_CATEGORY = QT_TRANSLATE_NOOP("CppEditor", "C++ Files and Classes");
 
 } // namespace Constants
 } // namespace CppEditor

src/plugins/qt4projectmanager/qt4projectmanagerconstants.h

@@ -84,7 +84,7 @@ const char * const QTVERSION_SETTINGS_PAGE_NAME = QT_TRANSLATE_NOOP("Qt4ProjectM
 // Wizard categories
 const char * const QT_APP_WIZARD_CATEGORY = "C.QtApplicationProjects";
 const char * const QT_APP_WIZARD_TR_SCOPE = "Qt4ProjectManager";
-const char * const QT_APP_WIZARD_TR_CATEGORY = QT_TRANSLATE_NOOP("Qt4ProjectManager", "Qt Application Project");
+const char * const QT_APP_WIZARD_TR_CATEGORY = QT_TRANSLATE_NOOP("Qt4ProjectManager", "Qt C++ Project");
 
 // Tasks
 const char * const PROFILE_EVALUATE = "Qt4ProjectManager.ProFileEvaluate";