Centre flag thumbs - issue #192
Entity-ise msgids in po output.
Changing time zone from Chile to US/Eastern
Special handling of en_US in gettext generation to not consider translations

This sets msgstrs to the original msgids - all en_US translations are
ignored.
translation tooltip to help translators determine what language they should be typing in
Merge pull request #200 from duckduckgo/doug/translation-popup

Translation Tooltip
Merge pull request #194 from jbarrett/centre-flags

Centre flag thumbs - issue #192
Merge pull request #195 from jbarrett/entity-translations

Entity-ise msgstrs in po output.
Merge pull request #199 from jbarrett/us-english-tokens

US english tokens