cubicweb-signedrequest #4573874 A client that is 2 seconds early cannot authenticate [rejected]

We check that the time delta between server request handling and client request building (server - client) is between 0 and 300 seconds. This is not what we want IMHO.

priorityimportant
typebug
done in0.2.0
load0.000
load left0.000
closed by<not specified>