Includes overlay 4, that handles most of the Nintendo WFC communication,
overlay 18, responsible for opening the WFC settings and overlay 60,
which holds the HTTP & base 64 encoding stuff.
General clean up of most documented files of overlay 97 following the
documentation of `overlay097/main_menu_util.c`.
This also adds some forgotten parentheses in macros that could result
in unintended behaviour.
