pkp/pkp-lib#11832 Use User's custom signature when available

[taslangraham]

For #11832

[touhidurabir]

Looks good to me . just one question , is it properly working with different locales depending on signature available on that locale and what is the targeted locale ?

[taslangraham]

Looks good to me . just one question , is it properly working with different locales depending on signature available on that locale and what is the targeted locale ?

Yea, it will return the signature available for the current locale.

what is the targeted locale
The signature is multilingual, so the user should be able enter a signature for any of the active locales