Massive UI revamping (v7): fixed widget size handling: sample sinks. Part of #1209

plugins/samplesink/hackrfoutput/hackrfoutputgui.ui

@@ -7,11 +7,11 @@
     <x>0</x>
     <y>0</y>
     <width>360</width>
-    <height>207</height>
+    <height>151</height>
    </rect>
   </property>
   <property name="sizePolicy">
-   <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
+   <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
     <horstretch>0</horstretch>
     <verstretch>0</verstretch>
    </sizepolicy>
@@ -19,7 +19,13 @@
   <property name="minimumSize">
    <size>
     <width>360</width>
-    <height>0</height>
+    <height>151</height>
+   </size>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>360</width>
+    <height>151</height>
    </size>
   </property>
   <property name="font">
@@ -540,17 +546,17 @@
   </layout>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>ButtonSwitch</class>
+   <extends>QToolButton</extends>
+   <header>gui/buttonswitch.h</header>
+  </customwidget>
   <customwidget>
    <class>ValueDial</class>
    <extends>QWidget</extends>
    <header>gui/valuedial.h</header>
    <container>1</container>
   </customwidget>
-  <customwidget>
-   <class>ButtonSwitch</class>
-   <extends>QToolButton</extends>
-   <header>gui/buttonswitch.h</header>
-  </customwidget>
   <customwidget>
    <class>TransverterButton</class>
    <extends>QPushButton</extends>