[New 4.1.18] HTML Printer Improvements

[emre]

@slabos we have better version of this document here

Printer Template Formatting Tags

##General <T> (Title) : When used it will format line as a title. <F> (Fill) : For example <F>- creates a line with - chars or <F>= creates a line with = chars. <EB> (Enable Bold) Prints everything Bold until <DB> command. <DB> (Disable Bold) Ends <EB> command <Jxy> (Justified) Justifies a line from pipe char. <J00>Total:|0.00 separates line from pipe (|) char. It aligns Total: part left and 0.00 part right. When used on a ESC/POS compatible ticket printer numeric parts sets font size. Fi…