add msgctxt to new strings

Change-Id: I3a0a7620c9ed0aec438d149bee80c6979b0a3bd7

cui/uiconfig/ui/specialcharacters.ui

@@ -259,11 +259,11 @@
                     </child>
                     <child>
                       <object class="GtkButton" id="favbtn">
-                        <property name="label" translatable="yes">Add to Favorites</property>
+                        <property name="label" translatable="yes" context="specialcharacters|favbtn">Add to Favorites</property>
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
                         <property name="receives_default">True</property>
-                        <property name="tooltip_text" translatable="yes">Maximum Limit: 16 Characters</property>
+                        <property name="tooltip_text" translatable="yes" context="specialcharacters|favbtn|tooltip_text">Maximum Limit: 16 Characters</property>
                         <property name="halign">center</property>
                       </object>
                       <packing>
@@ -527,7 +527,7 @@
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
                     <property name="valign">start</property>
-                    <property name="label" translatable="yes">Favorite Characters:</property>
+                    <property name="label" translatable="yes" context="specialcharacters|favbtn|symboltext2">Favorite Characters:</property>
                   </object>
                   <packing>
                     <property name="expand">False</property>

sfx2/uiconfig/ui/charmapcontrol.ui

@@ -221,7 +221,7 @@
           <object class="GtkLabel" id="label2">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
-            <property name="label" translatable="yes">Favourites</property>
+            <property name="label" translatable="yes" context="charmapcontrol|label2">Favourites</property>
           </object>
           <packing>
             <property name="expand">False</property>