Define all of the entries for love-minor-mode-map in one place

The Emacs Lisp reference describes this as the preferred style for
minor modes.  This patch makes no logical changes to the code.  It
only groups the existing key-bindings and menu definitions into a
single place.
Create love-minor-mode-map first before defining the mode

This fixes a bug where the compiler complains about a reference to
love-minor-mode-map before it exists.