Salutation in French MME and MR not beeing translated; allow to hide salutation

[bjoern86]

1. The salutation MME and MR is not beeing translated on carddav client.
   Should be "Herr" for MR and "Frau" for MME. Within Dolibarr the Translation works fine.

2. There should be a Checkbox in dolibarr module setting "Transfer salutation" which needs to be checked if salutation shall be synced. If unchecked only sync forename and surename.

3. On mobile (Android) I see e.g. MR Peter Mueller, on VW car I only see "Mueller, MR" and no forename. (Should be "MR Peter Müller", or in German "Herr Peter Müller" or only "Peter Müller" if Checkbox is unchecked)