Make things compile on 1.7.2

The mod doesn't actually seem to do anything yet, but at least it compiles.
Put things in standard directories.
Fix version number expansion on build.
Ignore all errors loading version.properties

It just means we'll have a default version string.
Register tick handler and pickup handler.

The basics of the mod now work.
Fix settings screen buttons.
Formatting/imports.
Fix server-assist mode.
Disable debug logging of server-assist mode.
Translation updates
Log4J is controlled externally.
Fix sound playing.
Merge branch '1.7'