Amended and Superseded relation links should not change the status in the previous ADR until the new is accepted

[asiermarques]

Acceptance criteria

When I create a new ADR with a relation with another one
Then the link is created in the new ADR file
and the relation's link on the previous file is not created either its status is updated

When I updated the status in and ADR file with relation to another file
And the status is accepted
Then the relation link is created in the previous ADR file
and the status is updated too