SSP-2427 Embed PDF fonts to render certain HTML font styles

Fixes bold and italics rendering in HTML text fields in Jasper
PDF reports. Does, I think, change the output font globally.
So might want to find a different font to embed if we can
figure out what the original was.

Based on a solution proposed here:

  http://stackoverflow.com/a/24054577
SSP-2427 WIP
SSP-2427 updates for email formatting through message templates
SSP-2427 WIP
SSP-2427 WIP