[Fixed] not being able to pay maintenance to a structure that is in the
negative if the paid amount isn't more than the amount in the negative -
mantis 5072

Change-Id: I653d42f146711578b16be14298f6434ce7807607
Merge "[Fixed] not being able to pay maintenance to a structure that is in the negative if the paid amount isn't more than the amount in the negative - mantis 5072" into unstable