Make sure print titles and print areas are unicode when serialising
*Created originally on Bitbucket by [CharlieC](https://bitbucket.org/%7B32d660d5-f934-4ce5-a7b0-52750378fae1%7D/)*
From #642 but different part of the code. Again Python 2 only due to how string formatting works.
```
#!xml
<x:definedNames xmlns:x="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<x:definedName name="_xlnm._FilterDatabase" localSheetId="3" hidden="1" function="0" vbProcedure="0">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm._FilterDatabase" localSheetId="2" hidden="0" function="0" vbProcedure="0">'CD534-Portimão'!$B$5:$V$58</x:definedName>
<x:definedName name="_xlnm._FilterDatabase" localSheetId="3" hidden="0" function="0" vbProcedure="0">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm._FilterDatabase_0" localSheetId="3" hidden="0" function="0" vbProcedure="0">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm._FilterDatabase_0_0" localSheetId="3" hidden="0" function="0" vbProcedure="0">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm._FilterDatabase_0_0_0" localSheetId="3" hidden="0" function="0" vbProcedure="0">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm._FilterDatabase_0_0_0_0" localSheetId="3" hidden="0" function="0" vbProcedure="0">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm.Print_Area" localSheetId="0">template_sheet!$A$1:$U$66</x:definedName>
<x:definedName name="_xlnm.Print_Area" localSheetId="1">'PAC Tavira'!$A$1:$U$66</x:definedName>
<x:definedName name="_xlnm.Print_Area" localSheetId="2">CD534-Portimão!$A$1:$U$66</x:definedName>
<x:definedName name="_xlnm._FilterDatabase" localSheetId="3" hidden="1">Sugestões!$A$1:$D$1233</x:definedName>
<x:definedName name="_xlnm.Print_Area" localSheetId="3">Sugestões!$None$None</x:definedName>
</x:definedNames>
```
issue