Add missing tooltips

plugins/channelrx/demodendoftrain/endoftraindemodgui.ui

@@ -628,7 +628,7 @@
     <item>
      <widget class="QTableWidget" name="packets">
       <property name="toolTip">
-       <string/>
+       <string>Received packets</string>
       </property>
       <property name="editTriggers">
        <set>QAbstractItemView::NoEditTriggers</set>

plugins/channelrx/noisefigure/noisefiguregui.ui

@@ -887,7 +887,7 @@
        </size>
       </property>
       <property name="toolTip">
-       <string/>
+       <string>Chart</string>
       </property>
      </widget>
     </item>

plugins/channelrx/radioastronomy/radioastronomygui.ui

@@ -2138,7 +2138,7 @@ This should be 2.73K when pointing at the sky</string>
        </size>
       </property>
       <property name="toolTip">
-       <string/>
+       <string>Spectrum chart</string>
       </property>
      </widget>
     </item>
@@ -3768,7 +3768,7 @@ This should be close to the expected difference in power between hot and cold ca
        </size>
       </property>
       <property name="toolTip">
-       <string/>
+       <string>Power chart</string>
       </property>
      </widget>
     </item>
@@ -4915,7 +4915,7 @@ This should be close to the expected difference in power between hot and cold ca
     <item>
      <widget class="QTableWidget" name="powerTable">
       <property name="toolTip">
-       <string/>
+       <string>Power table</string>
       </property>
       <property name="editTriggers">
        <set>QAbstractItemView::NoEditTriggers</set>

plugins/feature/antennatools/antennatoolsgui.ui

@@ -74,6 +74,9 @@
          <height>0</height>
         </size>
        </property>
+       <property name="toolTip">
+        <string>Source for frequency value</string>
+       </property>
        <item>
         <property name="text">
          <string>MHz</string>
@@ -271,7 +274,7 @@
         </size>
        </property>
        <property name="toolTip">
-        <string/>
+        <string>Source for frequency value</string>
        </property>
        <item>
         <property name="text">

plugins/feature/map/mapbeacondialog.ui

@@ -112,7 +112,7 @@
       <item>
        <widget class="QTableWidget" name="beacons">
         <property name="toolTip">
-         <string/>
+         <string>Displays which beacon is transmitting on which frequency</string>
         </property>
         <column>
          <property name="text">

plugins/feature/map/mapradiotimedialog.ui

@@ -46,7 +46,7 @@
       <item>
        <widget class="QTableWidget" name="transmitters">
         <property name="toolTip">
-         <string/>
+         <string>Transmitters table</string>
         </property>
         <column>
          <property name="text">

plugins/samplesource/fileinput/fileinputgui.ui

@@ -134,6 +134,9 @@
          <bold>false</bold>
         </font>
        </property>
+       <property name="toolTip">
+        <string>Record center frequency in Hz</string>
+       </property>
        <property name="text">
         <string>10,000,000,000</string>
        </property>

sdrgui/gui/fftwisdomdialog.ui

@@ -84,6 +84,9 @@
      </item>
      <item>
       <widget class="QComboBox" name="fftwMaxSize">
+       <property name="toolTip">
+        <string>FFT maximum size</string>
+       </property>
        <item>
         <property name="text">
          <string>128</string>