implement dynamic language swapping.
add css for external links
fix typo in export->geojson-as-gist translations
remove useless strings
update filesaver libs & load optional libraries last
have the "browser unsupported" message hardcoded, to avoid "undefined" warnings in crappy browsers
make "click here to zoom to data" text translatable
fix typo
bugfix
handle missing translations better (don't just display nothing)
add translating section to readme
typo
expose list of supported languages, and use it in ui code
add script that automatically grabs translations from transifex

(very much inspired by https://github.com/systemed/iD/blob/master/data/update_locales.js)
fix path to get "make translations" to work correctly
Merge branch 'i18n-transifex'
first fetching of translations from transifex, enable Danish translation

Thanks @neogeografen for the Danish translation!
revert to jquery1 (it's not time yet apparently)
also induce autorun if the "R" URL-argument is empty ("...&R=")
add "request blocked by addon" to list of possible ajax errors