Fix Warnings and implements Systray

Common/Theme.qml

@@ -9,6 +9,8 @@ Singleton {
 
     readonly property int barSize: 35
     readonly property double heightGaps: barSize * 0.8
+    readonly property string fontFamily: "Source Code Pro"
+    readonly property int gaps: 5
     
     // Colors
     FileView {
@@ -38,7 +40,7 @@ Singleton {
     property color color7Bright: walColorsText[14]
     property color foregroundColorBright: walColorsText[15]
 
-    readonly property string textColor: foregroundColor
+    readonly property color textColor: foregroundColor
 // background "#0e1721"
 // color2     "#463e44"
 // color3     "#7b4834"