Bug 65284 [preferences][templates] importing template preferences does not update the template store
RC1 Importing preferences may change the custom (code) templates. However, the TemplateStore instance storing the templates for the Java editor does not update itself. Steps to reproduce: - import a preferences file with custom template for the file comment - create a new class -> the old file comment is used Solution is to create a IPropertyChangeListener in JavaPlugin and reload the (Code)TemplateStore upon a preference change.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
}
	/**
	 * Returns the template context type registry for the code generation
	 * templates.
	 * 
	 * @return the template context type registry for the code generation
	 *         templates
	 * @since 3.0
	 */
	public ContextTypeRegistry getCodeTemplateContextRegistry() {
		if (fCodeTemplateContextTypeRegistry == null) {
			fCodeTemplateContextTypeRegistry= new ContributionContextTypeRegistry();
			
			CodeTemplateContextType.registerContextTypes(fCodeTemplateContextTypeRegistry);
		}
		return fCodeTemplateContextTypeRegistry;
	}
	
	/**
	 * Returns the template store for the code generation templates.
	 * 
	 * @return the template store for the code generation templates
	 * @since 3.0
	 */
	public TemplateStore getCodeTemplateStore() {
		if (fCodeTemplateStore == null) {
			boolean alreadyMigrated= getPreferenceStore().getBoolean(CODE_TEMPLATES_MIGRATION_KEY);
			if (alreadyMigrated)
				fCodeTemplateStore= new ContributionTemplateStore(getCodeTemplateContextRegistry(), getPreferenceStore(), CODE_TEMPLATES_KEY);
			else {