Rename PROPERTIES to STRING_UTF8_MAP for clarity

This class has nothing to do with the properties system

common/string_utf8_map.cpp

@@ -0,0 +1,37 @@
+/*
+ * This program source code file is part of KICAD, a free EDA CAD application.
+ *
+ * Copyright (C) 2016 SoftPLC Corporation, Dick Hollenbeck <[email protected]>
+ * Copyright (C) 2016 Kicad Developers, see AUTHORS.txt for contributors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string_utf8_map.h>
+
+
+bool STRING_UTF8_MAP::Value( const char* aName, UTF8* aFetchedValue ) const
+{
+    STRING_UTF8_MAP::const_iterator it = find( aName );
+
+    if( it != end() )
+    {
+        if( aFetchedValue )
+            *aFetchedValue = it->second;
+
+        return true;
+    }
+
+    return false;
+}