FIXTURES: withtfields.mtpl, withtfields_and_plugins.mtpl, subtemplate.MAIN.mtpl, subtemplate.SUB1.mtpl
* new handling of empty lines, so must remove unwanted empty lines!
PhpCMSng\Content\MenuDataParser
* NEWMETHOD: getMenuLevelByMenuClass()
* NEWMETHOD: haveMenuLevelByMenuClass()
PhpCMSng\Content\MenuDataParser\MenuLevel
* NEWMETHOD: getMenuLevelByMenuClass()
* NEWMETHOD: haveMenuLevelByMenuClass()
PhpCMSng\Renderer\MenuTemplateRenderer
* REWRITE: _replaceMenuWithEntry(), works now a little different, its generate a new MenuTemplateRenderer Object and set the specific MenuLevel!, needed for Recursive Display of all MenuLevel not only active ones!