[Dev]: Advanced Drop-down Tabs

[TylerBloom]

Unmet Need:

Currently, there are only "simple" tournament tabs in the web frontend. This works for now, but more specialized tabs will be needed in the future. Very roughly, "advanced" tabs are those that display/manipulate TournamentManger details and non-advanced tabs display/manipulate Tournament details.

Solution:

An "Advanced" drop-down tab is added to the set of tournament tabs. From that, various advanced tabs can be selected.