Create Projects, so users can add sessions to a project

[AlbertoCasasOrtiz]

Better illustrated with an example:

Let's say I have a project in which I have to record ten different subjects running in lab, and in the wild. This would mean creating 20 sessions (One per each subject in each condition). If I want to download all of the data, I would have to either download each session individually (20 downloads), or download all information associated to each subject (10 download). But, what if the same subject is associated to sessions captured for other experiments, for example, jumping, and I don't want to download it?

In this case, having projects to which you can associate sessions, and allowing downloading on one click all of the information associated to a project could be useful. Also would allow users to better organize their sessions.