Add agents kind to REST query.

[thewillyhuman]

For the REST web service that allows to query info about an agent the input must be changed from

{"login": user, "password": password}

to

{"login": user, "password": password, "kind":kind}

Notice that the kind field is new and its representation is an integer number that represents the agent's kind. The keyword identifier comes from a master CVS file that contains 2 fields separated by commas, where first field is the numeric code and the second one is the name of the user kind. For example:

1,Person
2,Entity
3,Sensor

If the agents kind name changes in the master file the system must be able to resolve the new ones

[thewillyhuman]

Working on it

[thewillyhuman]

Implemented at #26