Migrate mozilla.com .lang files to new project mozilla.lang
Update to last translations from Pootle.

We previously hosted a mozilla.com project on Pootle.  These
are translations from there.
Convert all .lang translations from mozilla.com repo.

Many translations are already hosted in .lang format in
the mozilla.com svn repo.  These were converted to PO
in a moz2po recovery process.
Update to latest .lang templates.
Basic phase list and descriptions.
Scots Gaelic: update to 100% translated
Fulah: update to 100% translated
Welsh: partial update
Acholi: partial update
All: general update to add channelsporter and survey1. Update to upgradedialog
Simplified the phases to 1. and other.
Afrikaans: minor update
Various Americanisms removed
Fulah: complete all .lang files
Scots Gaelic: all .lang translated
Acholi: all .lang translated
Afrikaans: .lang updates
Luganda: minor update
Updates against new .lang files
Update with some recovered translations