feat: Cloud service providers & Translation.io#1107

Merged

semoal merged 8 commits intolingui:mainfrom MichaelHoste:translation.io

Sep 7, 2021

+321-2

Commits on Jul 16, 2021

Allow cloud synchronization services using a special configuration block, and add specific Translation.io sync process
MichaelHoste
committed

Commits on Jul 19, 2021

Reuse options.clean to clean unused segments from Translation.io (equivalent to sync_and_purge)
MichaelHoste
committed
Create headers for target language POs, improve sync by only using Translation.io "source" segments and using context to deal with existing ID
MichaelHoste
committed

Commits on Jul 26, 2021

No more "norwegian" as default language for headers
MichaelHoste
committed