Revise payment tutorials, add/remove screenshots

_code-samples/modular-tutorials/create-conditional-escrow.js

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+// *******************************************************
+// ************* Create Conditional Escrow ***************
+// *******************************************************
+
+async function createConditionalEscrow() {
+
+  //------------------------------------------------------Connect to the Ledger
+  let net = getNet()
+  const client = new xrpl.Client(net)
+  await client.connect()
+  let results = `Connected to ${net}, creating conditional escrow.\n`
+  resultField.value = results
+
+  const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
+  const sendAmount = amountField.value
+  
+  wallet.address
+  
+  let escrow_cancel_date = new Date()
+  escrow_cancel_date = addSeconds(parseInt(escrowCancelDateField.value))
+
+  // ------------------------------------------------------- Prepare transaction
+
+  const escrowTx = await client.autofill({
+    "TransactionType": "EscrowCreate",
+    "Account": wallet.address,
+    "Amount": xrpl.xrpToDrops(sendAmount),
+    "Destination": destinationField.value,
+    "CancelAfter": escrow_cancel_date,
+    "Condition": escrowConditionField.value
+  })
+
+  // ------------------------------------------------ Sign prepared instructions
+  const signed = wallet.sign(escrowTx)
+
+  // -------------------------------------------------------- Submit signed blob
+  const tx = await client.submitAndWait(signed.tx_blob)
+  results += "\nSequence Number (Save!): " + tx.result.tx_json.Sequence 
+  results  += "\n\nBalance changes: " + 
+  JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
+  xrpBalanceField.value = (await client.getXrpBalance(wallet.address))
+  resultField.value = results
+
+  // ----------------------------------------------Disconnect from the XRP Ledger
+  client.disconnect()
+
+} // End of createTimeEscrow()
+
+// *******************************************************
+// ************** Finish Conditional Escrow **************
+// *******************************************************
+
+async function finishConditionalEscrow() {
+  let net = getNet()
+  const client = new xrpl.Client(net)
+  await client.connect()
+  let results = `Connected to ${net}, fulfilling conditional escrow.\n`
+  resultField.value = results
+
+  const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
+
+  // ------------------------------------------------------- Prepare transaction
+
+  const prepared = await client.autofill({
+    "TransactionType": "EscrowFinish",
+    "Account": accountAddressField.value,
+    "Owner": escrowOwnerField.value,
+    "OfferSequence": parseInt(escrowSequenceNumberField.value),
+    "Condition": escrowConditionField.value,
+    "Fulfillment": escrowFulfillmentField.value
+  })
+
+  // ------------------------------------------------ Sign prepared instructions
+  const signed = wallet.sign(prepared)
+
+  // -------------------------------------------------------- Submit signed blob
+  const tx = await client.submitAndWait(signed.tx_blob)
+  results  += "\nBalance changes: " + 
+    JSON.stringify(xrpl.getBalanceChanges(tx.result.meta), null, 2)
+  resultField.value = results
+  xrpBalanceField.value = (await client.getXrpBalance(wallet.address))
+  client.disconnect()
+
+} // End of finishEscrow()