Update #7

What's new:

• Music: one Minecraft-like track made by myself
• Settings: now you can change the sounds and music volume
• New Tree: Palm (with coconuts)
• New Skill: Amateur Farmer
• New Skill: Amateur Fisher
• New Skill: Amateur Beekeeper
• New Skill: Amateur Breeder

Bugfixes:

• Watermelons now saves correctly
• Worker's info now opens correctly
• And some minor fixes