Add other locales to build environment so that system messages + number/date formatting can reflect different settings

[fool]

Currently we only have a few locales, none non-US-english, installed in the build environment:

$ locale -a
C
C.UTF-8
en_US.utf8
POSIX

We have a request for French, but should probably just include all of the ones we can think of, since it's useful to people who aren't US-English speakers to be able to use the build environment in their native language and format things (like dates on blog posts) using system utilities.

[rybit]

Soooooo there are 152 packages available in apt. Should we just add them all?

language-pack-aa - translation updates for language Afar
language-pack-af - translation updates for language Afrikaans
language-pack-am - translation updates for language Amharic
language-pack-an - translation updates for language Aragonese
language-pack-ar - translation updates for language Arabic
language-pack-as - translation updates for language Assamese
language-pack-ast - translation updates for language Asturian
language-pack-az - translation updates for language Azerbaijani
language-pack-be - translation updates for language Belarusian
language-pack-bem - translation updates for language Bemba (Zambia)
language-pack-ber - translation updates for language Berber languages
language-pack-bg - translation updates for language Bulgarian
language-pack-bho - translation updates for language Bhojpuri
language-pack-bn - translation updates for language Bengali
language-pack-bo - translation updates for language Tibetan
language-pack-br - translation updates for language Breton
language-pack-bs - translation updates for language Bosnian
language-pack-ca - translation updates for language Catalan; Valencian
language-pack-crh - translation updates for language Tatar, Crimean
language-pack-cs - translation updates for language Czech
language-pack-csb - translation updates for language Kashubian
language-pack-cv - translation updates for language Chuvash
language-pack-cy - translation updates for language Welsh
language-pack-da - translation updates for language Danish
language-pack-de - translation updates for language German
language-pack-dv - translation updates for language Divehi; Dhivehi; Maldivian
language-pack-dz - translation updates for language Dzongkha
language-pack-el - translation updates for language Greek, Modern (1453-)
language-pack-en - translation updates for language English
language-pack-eo - translation updates for language Esperanto
language-pack-es - translation updates for language Spanish; Castilian
language-pack-et - translation updates for language Estonian
language-pack-eu - translation updates for language Basque
language-pack-fa - translation updates for language Persian
language-pack-ff - translation updates for language Fulah
language-pack-fi - translation updates for language Finnish
language-pack-fil - translation updates for language Filipino
language-pack-fo - translation updates for language Faroese
language-pack-fr - translation updates for language French
language-pack-fur - translation updates for language Friulian
language-pack-fy - translation updates for language Western Frisian
language-pack-ga - translation updates for language Irish
language-pack-gd - translation updates for language Gaelic; Scottish Gaelic
language-pack-gl - translation updates for language Galician
language-pack-gu - translation updates for language Gujarati
language-pack-gv - translation updates for language Manx
language-pack-ha - translation updates for language Hausa
language-pack-he - translation updates for language Hebrew
language-pack-hi - translation updates for language Hindi
language-pack-hne - translation updates for language Chhattisgarhi
language-pack-hr - translation updates for language Croatian
language-pack-hsb - translation updates for language Sorbian, Upper
language-pack-ht - translation updates for language Haitian; Haitian Creole
language-pack-hu - translation updates for language Hungarian
language-pack-hy - translation updates for language Armenian
language-pack-ia - translation updates for language Interlingua (International Auxiliary Language Association)
language-pack-id - translation updates for language Indonesian
language-pack-ig - translation updates for language Igbo
language-pack-is - translation updates for language Icelandic
language-pack-it - translation updates for language Italian
language-pack-ja - translation updates for language Japanese
language-pack-ka - translation updates for language Georgian
language-pack-kk - translation updates for language Kazakh
language-pack-kl - translation updates for language Kalaallisut; Greenlandic
language-pack-km - translation updates for language Central Khmer
language-pack-kn - translation updates for language Kannada
language-pack-ko - translation updates for language Korean
language-pack-ks - translation updates for language Kashmiri
language-pack-ku - translation updates for language Kurdish
language-pack-kw - translation updates for language Cornish
language-pack-ky - translation updates for language Kirghiz; Kyrgyz
language-pack-lb - translation updates for language Luxembourgish; Letzeburgesch
language-pack-lg - translation updates for language Ganda
language-pack-li - translation updates for language Limburgan; Limburger; Limburgish
language-pack-lo - translation updates for language Lao
language-pack-lt - translation updates for language Lithuanian
language-pack-lv - translation updates for language Latvian
language-pack-mai - translation updates for language Maithili
language-pack-mg - translation updates for language Malagasy
language-pack-mhr - translation updates for language Mari, Eastern
language-pack-mi - translation updates for language Maori
language-pack-mk - translation updates for language Macedonian
language-pack-ml - translation updates for language Malayalam
language-pack-mn - translation updates for language Mongolian
language-pack-mr - translation updates for language Marathi
language-pack-ms - translation updates for language Malay
language-pack-mt - translation updates for language Maltese
language-pack-my - translation updates for language Burmese
language-pack-nan - translation updates for language Chinese, Min Nan
language-pack-nb - translation updates for language Bokmål, Norwegian; Norwegian Bokmål
language-pack-nds - translation updates for language German, Low
language-pack-ne - translation updates for language Nepali
language-pack-nl - translation updates for language Dutch; Flemish
language-pack-nn - translation updates for language Norwegian Nynorsk; Nynorsk, Norwegian
language-pack-nso - translation updates for language Pedi
language-pack-oc - translation updates for language Occitan (post 1500)
language-pack-om - translation updates for language Oromo
language-pack-or - translation updates for language Oriya
language-pack-os - translation updates for language Ossetian; Ossetic
language-pack-pa - translation updates for language Panjabi; Punjabi
language-pack-pap - translation updates for language Papiamento
language-pack-pl - translation updates for language Polish
language-pack-ps - translation updates for language Pushto; Pashto
language-pack-pt - translation updates for language Portuguese
language-pack-ro - translation updates for language Romanian
language-pack-ru - translation updates for language Russian
language-pack-rw - translation updates for language Kinyarwanda
language-pack-sa - translation updates for language Sanskrit
language-pack-sc - translation updates for language Sardinian
language-pack-sd - translation updates for language Sindhi
language-pack-se - translation updates for language Northern Sami
language-pack-shs - translation updates for language Shuswap
language-pack-si - translation updates for language Sinhala; Sinhalese
language-pack-sk - translation updates for language Slovak
language-pack-sl - translation updates for language Slovenian
language-pack-so - translation updates for language Somali
language-pack-sq - translation updates for language Albanian
language-pack-sr - translation updates for language Serbian
language-pack-ss - translation updates for language Swati
language-pack-st - translation updates for language Sotho, Southern
language-pack-sv - translation updates for language Swedish
language-pack-sw - translation updates for language Swahili
language-pack-ta - translation updates for language Tamil
language-pack-te - translation updates for language Telugu
language-pack-tg - translation updates for language Tajik
language-pack-th - translation updates for language Thai
language-pack-ti - translation updates for language Tigrinya
language-pack-tk - translation updates for language Turkmen
language-pack-tl - translation updates for language Tagalog
language-pack-tr - translation updates for language Turkish
language-pack-ts - translation updates for language Tsonga
language-pack-tt - translation updates for language Tatar
language-pack-ug - translation updates for language Uighur; Uyghur
language-pack-uk - translation updates for language Ukrainian
language-pack-ur - translation updates for language Urdu
language-pack-uz - translation updates for language Uzbek
language-pack-ve - translation updates for language Venda
language-pack-vi - translation updates for language Vietnamese
language-pack-wa - translation updates for language Walloon
language-pack-wae - translation updates for language Walser
language-pack-wo - translation updates for language Wolof
language-pack-xh - translation updates for language Xhosa
language-pack-yi - translation updates for language Yiddish
language-pack-yo - translation updates for language Yoruba
language-pack-zh-hans - translation updates for language Simplified Chinese
language-pack-zh-hant - translation updates for language Traditional Chinese
language-pack-zu - translation updates for language Zulu
language-pack-brx - translation updates for language Bodo (India)
language-pack-byn - translation updates for language Bilin
language-pack-ce - translation updates for language Chechen
language-pack-ckb - translation updates for language Kurdish, Central
language-pack-iu - translation updates for language Inuktitut```

[fool]

that is alot! (http://hyperboleandahalf.blogspot.com/2010/04/alot-is-better-than-you-at-everything.html)

Maybe just use the more popular ones for now and add others ad-hoc based on requests? Based on the customers I've spoken with, these seem like the most useful:

language-pack-ar - translation updates for language Arabic
language-pack-cs - translation updates for language Czech
language-pack-da - translation updates for language Danish
language-pack-de - translation updates for language German
language-pack-el - translation updates for language Greek, Modern (1453-)
language-pack-es - translation updates for language Spanish; Castilian
language-pack-fi - translation updates for language Finnish
language-pack-fil - translation updates for language Filipino
language-pack-fr - translation updates for language French
language-pack-he - translation updates for language Hebrew
language-pack-hi - translation updates for language Hindi
language-pack-it - translation updates for language Italian
language-pack-ja - translation updates for language Japanese
language-pack-ka - translation updates for language Georgian
language-pack-ko - translation updates for language Korean
language-pack-nan - translation updates for language Chinese, Min Nan
language-pack-nn - translation updates for language Norwegian Nynorsk; Nynorsk, Norwegian
language-pack-pl - translation updates for language Polish
language-pack-pt - translation updates for language Portuguese
language-pack-ro - translation updates for language Romanian
language-pack-ru - translation updates for language Russian
language-pack-sa - translation updates for language Sanskrit
language-pack-sv - translation updates for language Swedish
language-pack-ta - translation updates for language Tamil
language-pack-th - translation updates for language Thai
language-pack-tr - translation updates for language Turkish
language-pack-uk - translation updates for language Ukrainian
language-pack-vi - translation updates for language Vietnamese
language-pack-yi - translation updates for language Yiddish
language-pack-zh-hans - translation updates for language Simplified Chinese
language-pack-zh-hant - translation updates for language Traditional Chinese