QmlProject: Unify use of constants

Change-Id: I7397eb12f46e1c0a175b6bcec794b3e8ad1cb19a
Reviewed-by: Aurindam Jana <aurindam.jana@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/qmlprojectmanager/qmlproject.cpp

@@ -109,7 +109,7 @@ QmlProject::QmlProject(Internal::Manager *manager, const QString &fileName)
       m_modelManager(QmlJS::ModelManagerInterface::instance())
 {
     setProjectContext(Core::Context(QmlProjectManager::Constants::PROJECTCONTEXT));
-    setProjectLanguages(Core::Context(QmlProjectManager::Constants::LANG_QML));
+    setProjectLanguages(Core::Context(ProjectExplorer::Constants::LANG_QMLJS));
 
     QFileInfo fileInfo(m_fileName);
     m_projectName = fileInfo.completeBaseName();

src/plugins/qmlprojectmanager/qmlprojectconstants.h

@@ -36,7 +36,6 @@ namespace QmlProjectManager {
 namespace Constants {
 
 const char *const PROJECTCONTEXT     = "QmlProject.ProjectContext";
-const char *const LANG_QML           = "QML";
 const char *const QMLPROJECT_MIMETYPE        = QmlJSTools::Constants::QMLPROJECT_MIMETYPE;
 
 } // namespace Constants