Assign ID automatically

[JJ]

I use usually a "prefix" to assign an ID that depends on the type of experiment, but the ID should be assigned automatically. However, I don't see where used IDs are stored. They seem to be on a queue, but there's no way to see which ones have been used already.
A simple query to redis should take care of that... IDs would be automatically assigned using auto-increment together with the prefix.

[mariosky]

I have two ideas for this.

1. In EvoSpace for instance, I just used a prefix plus a timestamp, is short and sequential. For other lower level IDs like WorkerID or MessageID, we generate a UUID.

2. The other idea is to have a settings.py file where each advanced user can generate the JSON as he pleases. For instance, we can have a python dictionary with an EXPERIMENT_ID key:

"EXPERIMENT_ID": str (uuid.uuid4())

[JJ]

Any one is OK, but the simplest, the better.

[mariosky]

@JJ Please check d2a3143