SoapySDR: fixed some GUI issues

plugins/samplesource/soapysdrinput/soapysdrinputgui.ui

@@ -321,6 +321,9 @@
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout_ppm">
+     <property name="bottomMargin">
+      <number>4</number>
+     </property>
      <item>
       <widget class="QLabel" name="LOppmLabel">
        <property name="text">
@@ -365,6 +368,13 @@
      </item>
     </layout>
    </item>
+   <item>
+    <widget class="Line" name="line">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QScrollArea" name="scrollArea">
      <property name="verticalScrollBarPolicy">
@@ -379,7 +389,7 @@
         <x>0</x>
         <y>0</y>
         <width>318</width>
-        <height>53</height>
+        <height>49</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_3">

plugins/samplesource/soapysdrinput/soapysdrinputplugin.cpp

@@ -30,7 +30,7 @@
 
 const PluginDescriptor SoapySDRInputPlugin::m_pluginDescriptor = {
     QString("SoapySDR Input"),
-    QString("4.4.1"),
+    QString("4.4.4"),
     QString("(c) Edouard Griffiths, F4EXB"),
     QString("https://github.com/f4exb/sdrangel"),
     true,