The $hasLangauges and $hasVariants checks were used in couple places,
which lead to the same code used in many places.
Following the DRY rule, let's implement a Service that can do that
check, and use that service everywhere in code.
Bug: T224735
Change-Id: I46d58758356e870c408a74b2c087a42d6ad0ddea
The number of generic menu entry specific files is growing which is
cluttering the Menu/ directory. Move the entries to a new subfolder.
Bug: T214540
Change-Id: I807d6f6034ee1924e3a606f5e6782c3298896825
* Introduce a HomeMenuEntry class and use it for adding the home menu link
* Provide override methods for text and CSS class
Bug: T223210
Change-Id: I37160887478cba829a6e2f10a4d8f87d95167556
