Merge #1013: Reorder the tabs in Qt

bc71997 Reorder the tabs in Qt (Wukong)

Pull request description:

  The current ordering of the tabs in Qt feels very strange. For example, the "Settings" tab is usually the last tab in most applications, while it's the 2nd tab in JoinMarket-Qt.

  This PR reorders the tabs from "JM Wallet, Settings, Coinjoins, Tx History, Coins" to "JM Wallet, Tx History, Coinjoins, , Coins, Settings".

  I made the new ordering of the tabs by consulting the Electrum wallet, which has the tab orders of "History, Send, Coins".

ACKs for top commit:
  kristapsk:
    ACK bc71997

Tree-SHA512: 8133764152316e31b475a80b7e55cc06f416a93fb787f08cde6935e4c2e5fc8d1b6f9245c11854bc13c8e2d274be424099bbcc07a1f5be860da3a5e4dca433d4

scripts/joinmarket-qt.py

@@ -2339,8 +2339,8 @@ def onTabChange(i):
     # TODO: hardcoded literal;
     # note that this is needed for an auto-update
     # of utxos on the Coins tab only atm.
-    if i == 4:
-        tabWidget.widget(4).updateUtxos()
+    if i == 2:
+        tabWidget.widget(2).updateUtxos()
 
 #to allow testing of confirm/unconfirm callback for multiple txs
 if isinstance(jm_single().bc_interface, RegtestBitcoinCoreInterface):
@@ -2360,11 +2360,11 @@ def onTabChange(i):
 mainWindow = JMMainWindow(reactor)
 tabWidget = QTabWidget(mainWindow)
 tabWidget.addTab(JMWalletTab(), "JM Wallet")
-settingsTab = SettingsTab()
-tabWidget.addTab(settingsTab, "Settings")
 tabWidget.addTab(SpendTab(), "Coinjoins")
-tabWidget.addTab(TxHistoryTab(), "Tx History")
 tabWidget.addTab(CoinsTab(), "Coins")
+tabWidget.addTab(TxHistoryTab(), "Tx History")
+settingsTab = SettingsTab()
+tabWidget.addTab(settingsTab, "Settings")
 
 mainWindow.resize(600, 500)
 if get_network() == 'testnet':