Change default Qube Manager size

So that it will fit all VMs from a default install.

qubesmanager/qube_manager.py

@@ -215,7 +215,6 @@ class VmManagerWindow(ui_qubemanager.Ui_VmManagerWindow, QtGui.QMainWindow):
     # pylint: disable=too-many-instance-attributes
     row_height = 30
     column_width = 200
-    min_visible_rows = 10
     search = ""
     # suppress saving settings while initializing widgets
     settings_loaded = False

ui/qubemanager.ui

@@ -6,12 +6,12 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>769</width>
-    <height>385</height>
+    <width>1100</width>
+    <height>600</height>
    </rect>
   </property>
   <property name="sizePolicy">
-   <sizepolicy hsizetype="Fixed" vsizetype="Maximum">
+   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
     <horstretch>0</horstretch>
     <verstretch>0</verstretch>
    </sizepolicy>
@@ -243,7 +243,7 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>769</width>
+     <width>1100</width>
      <height>23</height>
     </rect>
    </property>
@@ -336,6 +336,12 @@
    <addaction name="menu_about"/>
   </widget>
   <widget class="QToolBar" name="toolbar">
+   <property name="sizePolicy">
+    <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+     <horstretch>0</horstretch>
+     <verstretch>0</verstretch>
+    </sizepolicy>
+   </property>
    <property name="contextMenuPolicy">
     <enum>Qt::CustomContextMenu</enum>
    </property>