Basic PC block and Wrench item, better art to follow.
Move most of the Computer into GenericComputer.
Update GenericComputer.
Change translation of computeron.
Update BlockComputers' on click. Stubs for TileEntities and GUIs
Reorganise+reformat imports. Add registration for GUIs, move registration of Events to IProxy.
Fix a bug when TileEntity was not mapped. Fix a bug where BlockComputers dropped themselves in their on/off state
Distinguish between Top amd Bottom textures. Make textures. Make so that BlockComputerOff turns on only when clicked on the power button
BlockComputerOn now changes icon. BlockComputerOff doesn't show GUI after booting
Add screenshots to README.md
Add texture to GUIComputer
Minimal test GUIComputer font rendering.