Bug 8375: Use TrueType fonts in PDF::Reuse

Bug 8375: Use TrueType fonts in PDF::Reuse

Since built-in PDF fonts suport just Latin-1 encoding, we have
to switch to TrueType fonts to correctly encode all UTF-8 characters
(which we should be getting from database anyway).

This approach also nicely sidesteps our encoding cludges, but
requires paths to TrueType fonts which are included in koha-conf.xml
under new <ttf> section. Without this directive in kona-conf.xml
code will still use Latin-1 built-in pdf fonts.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Chris Nighswonger <cnighswonger@foundations.edu>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>