Priority for translations was hardcoded, and hardcoded the project name as "mysite".
This takes the order from a configuration property "module_prority". You can
use standard config fragment before and after rules to make a module less or
more important than anything else, with these tweaks:
- Unless it has it's order explicitly defined, the "project" module (normally mysite)
will be considered highest priority
- There is an "other_modules" value in the order list which will be replaced by
all the modules (except the project module) that don't have their order
explicitly defined.