(Housekeeping & Optimization): Sync W2 Changes With W3 #82

[AdamMomen]

What?

• [x] Refactored arguments to contract to object based on the contract argument calling on the backend
• [x] Modified the transaction listener to data access based on the property params
• [x] Enabled timestamps in mongo Issuer, Stakeholder, StockClass and StockIssuance data objects
• [x] Modified test scripts to pull the latest inserted record by updatedBy field
• [x] Replaced Stock Transactions libraries with Stock library
• [x] Fixed bug when invoking createStockIssuanceStructForTransfer not passing stakeholder argument
• [x] Removed boolean return in the stock transaction event handlers
• [x] Removed nonce in repurchaseStock & cancelStuck external functions param

Why?

• To maintain changes introduced by #77

Screenshots