(#51703121) Refactor MbMenu and MinimalDynamicMbMenu: Fixed issue with css classes, refactoring doRenderSubMenu()
(#51703121) Refactor MbMenu and MinimalDynamicMbMenu: Fixed issue with css classes, refactoring doRenderSubMenu()

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branch : refactoring

speixoto/zurmo-for-school,speixoto/zurmo-for-school,speixoto/zurmo-for-school