Encumbrance limit not restricting order workflow

Overview: Encumbrance limit not calculating correctly when expense classes are involved. Orders can be opened when the budget clearly doesn't have enough money

Part two:

1. Log into some FOLIO environment as User X
2. Click finance app
3. create a budget with $1000 allocated
4. Transfer $900 into this budget from a different budget
5. Create an order with fund distribution for $1000 with Fund distribution 100% to this Fund and open it
6. NOW $1000 is now encumbered against budget
7. Create invoice for this order and approve and pay it
8. NOW $1000 expended against budget
9. Create new order for $1 for the same fund and open it
10. NOW $1 is encumbered against budget and $1000 expended
11. Create third order for $1000 for that Fund and expense class
12. Open order

Expected Results: Order can not be opened because the encumbrance limit (100%) for the budget has been reached.

Actual Results: Order is opened. Budget has $2001 unavailable but total funding is only $2000

Additional Information:
Encumbrance restriction should be based on (Total funding * allowable encumbrance percentage) - (awaiting payment + expended) - encumbered

Over encumbered should be calculated by Total funding - (awaiting payment + expended) - encumbered

Expenditure restriction should be based on (Total funding * allowable expenditure percentage) - (expended)

Eg. 

Total allocated = 3950
Net transfers = 100
Total Funding = 4050
Encumbered = 51
Awaiting payment = 2000
Expended = 2000

Allowable encumbrance, 110% = 4455 (Limit for encumbrance when opening/editing order)

Allowable Expenditure, 100% = 4050 (Limit for approving/paying invoices)

Over encumbered = 1 Min0((2000 + 2000 + 51) - 4050)
Over Expended = 0 Min0(2000 - 4050)

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