Add tool tip for rescan ADIF log button

Also removed the  tool tip for the  settings main tab widget  as it is
confusing when it gets inherited by children with no tool tip.

Configuration.ui

@@ -16,9 +16,6 @@
   <layout class="QVBoxLayout" name="verticalLayout_2">
    <item>
     <widget class="QTabWidget" name="configuration_tabs">
-     <property name="toolTip">
-      <string>Select tab to change configuration parameters.</string>
-     </property>
      <property name="currentIndex">
       <number>0</number>
      </property>
@@ -2259,6 +2256,9 @@ Right click for insert and delete options.</string>
             </item>
             <item>
              <widget class="QPushButton" name="rescan_log_push_button">
+              <property name="toolTip">
+               <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Click to scan the wsjtx_log.adi ADIF file again for worked before information&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+              </property>
               <property name="text">
                <string>Rescan ADIF Log</string>
               </property>