[WIP] Mode Translations

**NOTE: ** In it's current state, this is not even close to being ready to pull yet, but this can serve as space for code-specific discussion and more commits from me (coming real soon)! General discussion and updates should probably be in #186, and code specific conversation can be here. 

The start of my work to get mode translation working, I changed the
print mode to actually have the respective translate text in a translate
file instead of in the code directly. List of changes:
- Static translate strings embedded in the HTML have been changed to
translate strings
- Dynamic translate strings (status messages) are translated and added
to an array at the beginning of the mode JS file. This array is
referenced instead of a translate string (keeping all major translate
strings in the same place)
- Added all strings to the existing print i18n mode file.

TODOs:
- Actually write the backend code to translate the strings in mode.
- Create base English translations from existing text in other modes.
- Create mode translations for other languages we support.