[qml] set theme properties directly on the qml object

for somereason values from Javascript are undefined from
the qml documents, setting the theme values directly  in
the qml document fixes the following error:

gui/themes/Calyx.qml

-import './theme-calyx.js' as Theme
 import QtQuick
 
 ThemeObject{
-        theme: Theme
+        bgColor: "#D3E9AC"
+        fgColor: "#F2FFDA"
+        iconOn: "../resources/calyx/calyx-shield-green.png"
+        iconOff: "../resources/calyx/calyx-red-shield.png"
+        iconConnecting: "../resources/calyx/calyx-yellow-shield.png"
+        iconSplash: "../resources/calyx/calyx-hand.png"
 } 

gui/themes/Riseup.qml

-import './theme-riseup.js' as Theme
 import QtQuick
 
 ThemeObject {
-        theme: Theme
+        bgColor: "#f3f3f3"
+        fgColor: "#ffffff"
+        iconOn: "../resources/riseup-icon.svg"
+        iconOff: "../resources/icon-noshield.svg"
+        iconConnecting: "../resources/ravens.gif"
+        iconSplash: "../resources/icon-noshield.svg"
 }

gui/themes/ThemeObject.qml

 import QtQuick
 
 QtObject {
-    property var theme;
+    // property var theme;
     // here we expose any var contained in 
     // the js file. This object can be accessed as the global 
     // customTheme, since it's loaded in main.qml