* added account navigation menu, copied and adapted from www

* fixed css

* support for login menu, registration menu from www

* Dropdown replaced with MenuBarMenu, override www css in menus

* render and style login dropdown via function from www

* moved menu styling from menu itself to menu bar

* refactoring menu components and containers

* refactor and restyle account nav menu

* cleaned up cruft and css per rschamp's review of PR 3070

It's shifted downward to not overlap the menubar, since it's hard to make a child z-indexed below its parent.

It's a cleaner API IMO but ended up being a messy implementation...

They open and close what more do you want?