Course #4, lecture #1, video #1. Interface (well, texture)
Course #4, lecture #1, video #2. Inventory

Rocket Launcher launches Anvils while ItemRocket is unimplemented.
Items drop on break, dont lag, dont crash, epic!
Developing ItemRocket, code refactor

ItemRocket is used as consumable by TileEntityFirework
Code refactor
Course #4, lecture #2, video #1. Type icon, text inside, button!

Draws icon inside for type of block it is. And text.
Button for enabling/disabling block (WIP).
Merge branch 'course4'

Conflicts:
	ru/secondfry/TestMod/blocks/BlockFirework.java