Fixed incoming dialog margins

resources/incoming_dialog.ui

@@ -7,19 +7,19 @@
     <x>0</x>
     <y>0</y>
     <width>480</width>
-    <height>170</height>
+    <height>165</height>
    </rect>
   </property>
   <property name="minimumSize">
    <size>
     <width>480</width>
-    <height>170</height>
+    <height>165</height>
    </size>
   </property>
   <property name="maximumSize">
    <size>
     <width>16777215</width>
-    <height>170</height>
+    <height>165</height>
    </size>
   </property>
   <property name="windowTitle">
@@ -33,6 +33,9 @@
    <property name="spacing">
     <number>10</number>
    </property>
+   <property name="margin">
+    <number>8</number>
+   </property>
    <item>
     <widget class="QFrame" name="frame">
      <property name="styleSheet">