[IMP] delivery: handle multiple trackers

Easypost return multiple tracker links for a single
picking. Currently it returns one link per package.

*_get_tracking_link instead of returning a simple string,
it could return a list of list with data
[[tracker number, tracker_puclic_url], ...]
stored as a json dump.

This commit add a check on carrier_tracking_url
in order to check if it has a json format. In this case it
will log a note and will not use the url action.

0 files changed, 0 insertions, 0 deletions