Finalize texts for zone #6
New:
- add zone #7 and reorganize enemies number by zone,
- add 4 weapons (zone #7),
- add earth materia (zone #7)
New:
- simplification of materia description,
- add bolt materia with cloud, and fire materia with Red XIII when they join the group
- remove xp-potion, add hi-potion (zone #7)