Bug 720427 - Review of french account templates

Fix gender issues
Bug 671615 - French: 'New Customer' button in Find Customer dialog is translated to 'Nouvel onglet'

This bug affected all translations, not only french
Add context to generic translatable string

This was suggested in bug 671615 by Jérôme Rapinat.
Convert ISO-8859-1 account chart templates to UTF-8
Set default currency for French account chart templates