Possible fix for #140. I need someone to help me test the texture id.
Almost forgot the important part :3
Made the fix for the texture general for all blocks.
Added missing file (TextureSide) and a bit of Block documentation.
Renamed some variables in drawBox, I am pretty sure I got them correct :3
Documented almost all of Screen and added a background to the chat for visibility.
Fixed mistake in Screen class and made the chat box actually be visible.
_123DMWM's fix for the MessageType announcement's positioning. Also includes me adding height to the FontRenderer and assigning two unassigned variables from it (charWidth and charHeight)
Adds feature #169 and cleaned up part of Screen.
Made the chatbox more transparent.

People had told me it was too opaque.
Improvements to chat background.
Merge pull request #172 from Gamemakergm/master

Fix for #140