bold font wasn't loaded when regular font loading was succesful

some styling fixes

electrum/gui/qml/components/Addresses.qml

@@ -81,7 +81,7 @@ Pane {
                                 color: model.held
                                         ? Qt.rgba(1,0,0,0.75)
                                         : model.numtx > 0
-                                            ? model.balance == 0
+                                            ? model.balance.satsInt == 0
                                                 ? Qt.rgba(0.5,0.5,0.5,1)
                                                 : Qt.rgba(0.75,0.75,0.75,1)
                                             : model.type == 'receive'

electrum/gui/qml/components/Receive.qml

@@ -143,7 +143,8 @@ Pane {
                     width: parent.width
                     Label {
                         text: qsTr('Receive queue')
-                        font.pixelSize: constants.fontSizeXLarge
+                        font.pixelSize: constants.fontSizeLarge
+                        color: Material.accentColor
                     }
                 }
             }

electrum/gui/qml/components/Send.qml

@@ -176,7 +176,8 @@ Pane {
                     width: parent.width
                     Label {
                         text: qsTr('Send queue')
-                        font.pixelSize: constants.fontSizeXLarge
+                        font.pixelSize: constants.fontSizeLarge
+                        color: Material.accentColor
                     }
                 }
             }

electrum/gui/qml/qeapp.py

@@ -154,8 +154,9 @@ class ElectrumQmlApplication(QGuiApplication):
 
         # add a monospace font as we can't rely on device having one
         self.fixedFont = 'PT Mono'
-        if (QFontDatabase.addApplicationFont('electrum/gui/qml/fonts/PTMono-Regular.ttf') < 0 and
-            QFontDatabase.addApplicationFont('electrum/gui/qml/fonts/PTMono-Bold.ttf') < 0):
+        not_loaded = QFontDatabase.addApplicationFont('electrum/gui/qml/fonts/PTMono-Regular.ttf') < 0
+        not_loaded = QFontDatabase.addApplicationFont('electrum/gui/qml/fonts/PTMono-Bold.ttf') < 0 and not_loaded
+        if not_loaded:
             self.logger.warning('Could not load font PT Mono')
             self.fixedFont = 'Monospace' # hope for the best