/restful/meshms/newsince/SID1/SID2/newsince/TOKEN/messagelist.json now
always lists an ACK as soon as it is received, instead of waiting for a
message to arrive as well.
Add environment variable SERVALD_RHIZOME_DB_RETRY_LIMIT to extend the
Rhizome DB retry period, set it to 60 seconds in RESTful tests to
override the default 5 seconds
Add stateful class to represent the state of the serval daemon, shifting some functions from BatPhone
Add convenience functions to get pre-configured MDP and HTTP Restful client classes