This reverts commit 475b733579.
It pulled updates from transifex *after* we switched translations
to 4.x only mode - which resulted in a lot of translation keys being
moved around. For example, asset-related translations went from
framework to the asset-admin module. The removal of these translations
in 3.x caused translations to go partially missing, since these new
modules are 4.x only.
See https://github.com/silverstripe/silverstripe-framework/issues/7002
a5a8982af6