[C2] Add tracking to all resource event

[NicoDucou]

In Chamilo 2 most of the content is a type of resource, so to be able to have an efficient tracking we should have a system to force all event that happens to a resource to be registered in the track_e_default table or similar.

At least at the begining we should track the following events and after we would get in more details :

• creation
• deletion
• edition
• visibility change

For every we should register the date, the user who did it and the context if needed.

[christianbeeznest]

It is implemented with this PR #6245

Thanks for confirmation.