Shaarli rejects tokens whose iat falls outside its clock
tolerance, so device/server skew caused HTTP 401 logins
even with a correct API secret. Estimate server time from
the Date response header, retry a 401 once with a
recalibrated token, trim credentials on login, and explain
the API-secret vs password mismatch in French error
messages.
Bump version to 2.14.1 (code 42).