Add option to translate the mobile menu title

[BlueFox4]

This PR introduces the option to translate the mobile menu title (which was hard-coded to 'Menu' before) by setting the $.Site.Params.menuTitle variable. If this is not done - nothing changes, nothing breaks.

Something missing? Please tell me!

[p01yak0v]

The similar variable $.Site.Params.menuMore is already defined and serves the same purpose. This variable should be used for consistency between desktop and mobile menu.

By the way, I've fixed this "issue" in earlier PR (#543), so you can upvote it to proceed with merge.

[BlueFox4]

@p01yak0v

Yes, I saw this PR before, but at least for me the following strings weren't the exact same thing:

• the title of the mobile menu (which only but always shows up on mobile)
• the title of the "more" menu (which only shows up on desktop AND if the number of menu items exceeds the $.Site.Params.showMenuItems limit

That's why I introduced the menuTitle variable in this PR.

I guess maybe something in the middle would be perfect; what I would suggest:

• introduce the $.Site.Params.menuTitle variable with following usage:
  • mobile: as the title of the mobile menu
  • desktop: as the title of the submenu, appearing on desktop when the maximum limit is exceeded (as described above), but if and only if $.Site.Params.showMenuItems is set to 0 (also, a button saying "Show more" is kind of confusing when there's nothing to extend (some menu item already shown), at least for me)
• keep the $.Site.Params.menuMore with following usage:
  • desktop: in all cases different from the one described above (aka $.Site.Params.showMenuItems > 0

Would that make sense to you?