refs #335, GUI finetuning

* combo boxes, size model changed - fixes the issue with the settings exceeding the boundaries
* main window can be minimized
* renaming the main page
* style sheet

src/blackgui/components/cockpitcomcomponent.ui

@@ -540,7 +540,7 @@
              </property>
             </widget>
            </item>
-           <item>
+           <item alignment="Qt::AlignRight">
             <widget class="QPushButton" name="pb_ComPanelSelcalTest">
              <property name="sizePolicy">
               <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
@@ -552,7 +552,7 @@
               <string>test SELCAL</string>
              </property>
              <property name="text">
-              <string>Test</string>
+              <string/>
              </property>
              <property name="icon">
               <iconset resource="../../blackmisc/blackmisc.qrc">