[Bleeding] Correct naming of sounds for 1.7. Fixes BUKKIT-5065

Several sounds were renamed in Minecraft 1.7, and have been updated
accordingly. Additionally, two sounds, HURT and BREATH, were removed from
Minecraft.
Fix generation of jungle trees. Fixes BUKKIT-5043

Due to changes in the generation of trees, the name of the class responsible
for the generation of jungle trees has changed from WorldGenMegaTree to
WorldGenJungleTree.  As such, references to WorldGenMegaTree need to be
updated to WorldGenJungleTree to generate the correct type of tree.

Pulled from PR #1277
Add missed tree types for Minecraft 1.7. Adds BUKKIT-5042

This commit adds support for the Tree Types that weren't added in the
initial update to Minecraft 1.7.

Pulled from PR #1277