i18n: Improve French translation

[The-Lum]

Improve French translation (to continue #12, ..., #396) for:

• [x] S/N length management Ref.: https://github.com/kaikramer/keystore-explorer/commit/c7c705b, https://github.com/kaikramer/keystore-explorer/commit/231b599, #429, #430
• [x] PKCS#12 Encryption Ref.: https://github.com/kaikramer/keystore-explorer/commit/2600fe1
• [x] DN Management Ref.: https://github.com/kaikramer/keystore-explorer/commit/78bea8081
• [x] Unicode issue
• [x] ~Number of revoked certs to CRL view~ ~Ref.: https://github.com/kaikramer/keystore-explorer/commit/0e0507a5~ ► See #473
• [x] Verify button and rsc msg on DViewCsr Ref.: https://github.com/kaikramer/keystore-explorer/commit/5c79281e1
• [x] ExportKeyPairPublicKeyAction.statusbar Ref.: https://github.com/kaikramer/keystore-explorer/commit/1b6afa413ec0b58df2c95cd4d11ee25f7200c502#diff-31b3c82da710396d4f520aabbcbacca3bd81dca155e54e3da2e2ec3d7b67c238
• [x] CSR Challenge tooltip
• [x] JWT View Ref.: #427
• [x] Fix Jar to JAR [for en, de and fr]
• [x] Improve DVerifyCertificate.Title, DViewExtensions.ViewCert and DViewExtensions.ViewCrl [for en, de and fr]
• [x] Improve SignedCertificateTimestampList and "Certificate Transparency SCTs" for fr

I think we're finally ready for a French version...

[The-Lum]

[FYI @kaikramer] I think we're finally ready for a French version...

[kaikramer]

I think we're finally ready for a French version...

I assume, you are hinting towards a 5.5.4 release. Fair enough, but I have removed Java 8 compatibility and introduced a new storage method for the preferences, which both should be in major release like 5.6.0, not in a 5.5.x release.

[The-Lum]

Hello @kaikramer,

No problem, I can wait a 5.6.0... I will now test the other corrected issues about windows size...

Regards, Th.