Fix of RAF word of power.

The player's magic level was limited to 1 while the RAF "word of power"
was active; now the limitation has been lifted.
RAF cheat: Also increase the player caster level

The previous commit fixes the RAF cheat so that it doesn't limit the
player caster level to 1.

It now applies the caster level bonus of the cheat to when casting
previously prepared spells or when NPCs cast spells, however not when
the player casts spells directly.
This commit fixes that inconsistency.