add SVG icons for new justification and hyphenation options
add toggle and styles for hyphenation and justification
change CSS to two letter language codes
convert hard coded lang values from ISO-639-2 to IANA
add utility to covert ISO-639-2 codes to IANA for hyphenation dictionaries
use new utility function to convert language codes just before they hit the html
fix text generator so html lang attributs use IANA codes
merge hyphenation into justification toggle
redraw justification toggle icon to be proportionally similar to other toggles
Merge pull request #26 from alerque/typography-hyphenation

Add hyphenation and justification as layout options
updating images, fixed sizes
added missing size
Allowing toggles to have a default value, so justification can be off by default
remove English strings from language names

Having this string is un-necessary in the case of the default English UI
(if you don't recognize the name of the language, content in that
language is not going to be very useful to you) and outright dead-weight
in the context of a localized UI (if you are using a not-English
version, non-localized strings hard coded in English are not that
useful).

Unless we include a full language name matrix with each language name
localized in each of the languages the site can be localized, it is more
generally useful to just show languages using their localized names (not to
mention easier).

Looking around at major platforms with localization support, this
appears to be the norm now (as opposed to a few years ago when
localization was first rolling out to a few programs and was being
driven by and English-first mindset).

If anything needs a hard-code English fall-back for people to "escape"
from a language they do not understand it would be the name of the
setting and the widget itself. Once they find the widget, having
"English" as a value in the list is enough.
strip hard coded English strings from text indexes
remove references to obsolete hard coded English localizations
remove unused English localization data from sample input files