Add a version check mechanic to startup, it is done in a seperate thread and has a config option to compleetly disable it. This allows us to notify users of new recomended builds. Hopefully stemming the flow of outdated help request. Also adds a warning to the main screen if you are running a 'Beta' Forge. Which means a Forge for a new version of Minecraft that we have not promoted a recomended build for yet.
Fix dig speed on redstone ore and obsidian.