Returned the extra GS to the Babylonian trait

This returns the original mod to its intended condition. If the GS is removed the reduced GS modifier rate hobbles the Babylonians.
Lake Victoria fix

Duplicate <Set> elements are not allowed.
HEAD error from merge

Sorry, this one slipped through.
Too many forward and backward commits at the one time, Git couldn't handle it, and I let this one get by.
Merge remote-tracking branch 'origin/master' into ExpiredReign