Gen 1: Learnset bug fixes

Solved four issues:
Metapod and Kakuna get Harden, and no other moves, in Challenge Cup
Beedrill has the move "twinneedle"
Gloom has the move "megadrian"
Pinsir has the move "strenght"
Merge pull request #190 from Joimer/patch-11

Gen 1: Learnset bug fixes