QmlJS highlighter: Highlight name after 'as' in imports.

Also fix a problem with the scope not being updated after initial
construction.

Change-Id: If5cf70bb029857b317ebbee3a6c4ee421213f24c
Reviewed-on: http://codereview.qt-project.org/6115
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>

src/plugins/qmljseditor/qmljssemantichighlighter.cpp

@@ -265,6 +265,12 @@ protected:
         addUse(fullLocationForQualifiedId(localId), SemanticHighlighter::BindingNameType);
     }
 
+    bool visit(UiImport *ast)
+    {
+        processName(ast->importId, ast->importIdToken);
+        return true;
+    }
+
     bool visit(UiObjectDefinition *ast)
     {
         if (m_scopeChain.document()->bind()->isGroupedPropertyBinding(ast)) {