Stop hardcoding carrier for some regions (bug 1061716)

This was introduced in 2f67a828 to be more more DRY, but it was wrong in some cases: for instance, it meant your carrier was automatically set to 'deutsche_telekom' if you had an US SIM.

Also took the time to sort the 2 arrays by MCC.
Fix some wrong carriers/regions, add some carriers etc
Merge pull request #661 from diox/stop-hardcoding-carriers-to-regions

Stop hardcoding carrier for some regions (bug 1061716)
L10n Extract/compile script. Today's lucky number is 1008.
Commit from Mozilla Verbatim by user michael.koehler1@gmx.de.: 333 of 333 strings translated (0 fuzzy).
Updated Polish translation
Merge pull request #682 from Witia1/master

Updated Polish translation
Prepend media url to FxA CSS (bug 1074235)
Merge pull request #680 from mstriemer/pull-fxa-css-from-cdn-1074235

Prepend media url to FxA CSS (bug 1074235)
Clear session when FxA calls logout callback (bug 1073182)