Include some fonts to QElectroTech

- include Liberation-Fonts and osifont
  (thanks elevatormind!)
- use "Liberation Sans" as default-font
- adjust License-Tab in About-Form
- Bugfix: When selecting a font, the current
  font is highlighted in dialog
- adjust some whitespace and English comments

qelectrotech.qrc

@@ -187,7 +187,6 @@
         <file>ico/diagram.png</file>
         <file>ico/splash.png</file>
         <file>titleblocks/default.titleblock</file>
-        <file>LICENSE</file>
         <file>ico/48x48/user-away.png</file>
         <file>ico/48x48/user-away-extended.png</file>
         <file>ico/32x32/format-text-bold.png</file>
@@ -740,5 +739,42 @@
         <file>ico/22x22/color/color-11-gray-09-darkslategray.png</file>
         <file>ico/22x22/color/color-11-gray-10-black.png</file>
         <file>ico/24x16/zh.png</file>
+
+        <!-- "Liberation Fonts" Font Software is licensed under the SIL Open Font License, Version 1.1
+             See the file "fonts/liberation-fonts.LICENSE" for license information. -->
+        <file>fonts/LiberationMono-Regular.ttf</file>
+	    <file>fonts/LiberationMono-Bold.ttf</file>
+	    <file>fonts/LiberationMono-Italic.ttf</file>
+	    <file>fonts/LiberationMono-BoldItalic.ttf</file>
+	    <file>fonts/LiberationSans-Regular.ttf</file>
+	    <file>fonts/LiberationSans-Bold.ttf</file>
+	    <file>fonts/LiberationSans-Italic.ttf</file>
+	    <file>fonts/LiberationSans-BoldItalic.ttf</file>
+	    <file>fonts/LiberationSerif-Regular.ttf</file>
+	    <file>fonts/LiberationSerif-Bold.ttf</file>
+	    <file>fonts/LiberationSerif-Italic.ttf</file>
+	    <file>fonts/LiberationSerif-BoldItalic.ttf</file>
+	    <file>fonts/liberation-fonts.NOTICE</file>
+	    <file>fonts/liberation-fonts.LICENSE</file>
+
+        <!-- "osifont" Font Software is licensed under the GNU GENERAL PUBLIC LICENSE, Version 3
+		     As a special exception, if you create a document which uses this font, and embed this font or unaltered
+			 portions of this font into the document, this font does not by itself cause the resulting document to be
+			 covered by the GNU General Public License. This exception does not however invalidate any other reasons why
+			 the document might be covered by the GNU General Public License. If you modify this font, you may extend
+			 this exception to your version of the font, but you are not obligated to do so. If you do not wish to do so,
+			 delete this exception statement from your version.
+
+			 See the file "fonts/osifont.LICENSE" for license information. -->
+	    <file>fonts/osifont.ttf</file>
+	    <file>fonts/osifont-italic.ttf</file>
+	    <file>fonts/osifont.NOTICE</file>
+	    <file>fonts/osifont.LICENSE</file>
+
+
+	<file>licenses/QElectroTech.NOTICE</file>
+	<file>licenses/QElectroTech.LICENSE</file>
+	<file>licenses/QET-Elements.NOTICE</file>
+	<file>licenses/QET-Elements.LICENSE</file>
     </qresource>
 </RCC>