prefdialogfdata.ui: wording changes

according to recommendations.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>

kweather/prefdialogdata.ui

@@ -279,7 +279,7 @@
                 <cstring>m_iconTheme</cstring>
             </property>
             <property name="title">
-                <string>Weather Icon</string>
+                <string>Weather Icons</string>
             </property>
             <vbox>
                 <property name="name">
@@ -290,7 +290,7 @@
                         <cstring>m_systemIcons</cstring>
                     </property>
                     <property name="text">
-                        <string>&amp;Use system icon theme</string>
+                        <string>&amp;Use system theme</string>
                     </property>
                     <property name="checked">
                         <bool>true</bool>
@@ -301,7 +301,7 @@
                         <cstring>m_kweatherIcons</cstring>
                     </property>
                     <property name="text">
-                        <string>Use &amp;KWeather theme</string>
+                        <string>Use classic &amp;KWeather theme</string>
                     </property>
                 </widget>
             </vbox>