qml: Introduce gear-outline icon

This icon is used in the navigation bar in Wallet mode

Author: johnny9

src/Makefile.qt.include

@@ -329,6 +329,7 @@ QML_RES_ICONS = \
   qml/res/icons/cross.png \
   qml/res/icons/export.png \
   qml/res/icons/gear.png \
+  qml/res/icons/gear-outline.png \
   qml/res/icons/info.png \
   qml/res/icons/network-dark.png \
   qml/res/icons/network-light.png \

src/qml/bitcoin_qml.qrc

@@ -78,6 +78,7 @@
         <file alias="cross">res/icons/cross.png</file>
         <file alias="export">res/icons/export.png</file>
         <file alias="gear">res/icons/gear.png</file>
+        <file alias="gear-outline">res/icons/gear-outline.png</file>
         <file alias="info">res/icons/info.png</file>
         <file alias="network-dark">res/icons/network-dark.png</file>
         <file alias="network-light">res/icons/network-light.png</file>

src/qml/imageprovider.cpp

@@ -92,6 +92,11 @@ QPixmap ImageProvider::requestPixmap(const QString& id, QSize* size, const QSize
         return QIcon(":/icons/gear").pixmap(requested_size);
     }
 
+    if (id == "gear-outline") {
+        *size = requested_size;
+        return QIcon(":/icons/gear-outline").pixmap(requested_size);
+    }
+
     if (id == "info") {
         *size = requested_size;
         return QIcon(":/icons/info").pixmap(requested_size);