Fill in missing label friendly names.

eeschema/sch_label.h

@@ -408,6 +408,11 @@ public:
         return wxT( "SCH_LABEL" );
     }
 
+    wxString GetFriendlyName() const override
+    {
+        return _( "Label" );
+    }
+
     const BOX2I GetBodyBoundingBox( const RENDER_SETTINGS* aSettings ) const override;
 
     bool IsConnectable() const override { return true; }
@@ -460,6 +465,11 @@ public:
         return wxT( "SCH_DIRECTIVE_LABEL" );
     }
 
+    wxString GetFriendlyName() const override
+    {
+        return _( "Directive Label" );
+    }
+
     EDA_ITEM* Clone() const override
     {
         return new SCH_DIRECTIVE_LABEL( *this );
@@ -538,6 +548,11 @@ public:
         return wxT( "SCH_GLOBALLABEL" );
     }
 
+    wxString GetFriendlyName() const override
+    {
+        return _( "Global Label" );
+    }
+
     EDA_ITEM* Clone() const override
     {
         return new SCH_GLOBALLABEL( *this );
@@ -603,6 +618,11 @@ public:
         return aItem && SCH_HIER_LABEL_T == aItem->Type();
     }
 
+    wxString GetFriendlyName() const override
+    {
+        return _( "Hierarchical Label" );
+    }
+
     wxString GetClass() const override
     {
         return wxT( "SCH_HIERLABEL" );

eeschema/sch_sheet_pin.h

@@ -82,6 +82,11 @@ public:
         return wxT( "SCH_SHEET_PIN" );
     }
 
+    wxString GetFriendlyName() const override
+    {
+        return _( "Sheet Pin" );
+    }
+
     bool operator ==( const SCH_SHEET_PIN* aPin ) const;
     bool operator!=( const SCH_SHEET_PIN* aRhs ) const { return !( this == aRhs ); }