I18n implementation

[mapachurro]

This PR:

• Sees a massive overhaul of most of the components
• Implements dynamic term linking, doing away with the clunky-ass .jsx file we had before
• Separates out translations from terms and defintions (translations are in locale .json files)
• Adds much improved search functionality
• Adds language drop-down selector, which persists
• Implements i18n on category and term fields;

##TODO

• Import more terms; I somehow lost a lot of them in this round
• Align translation .json files with new terms; there will be a lot of non-matches

[Aranmobinarann]

3aecc3c

[Aranmobinarann]

3aecc3c