Add support for desactivated user name setting.
Minor style fixes.
Update copyright notice.
Update term-of-use to match current policy.
Update help page.
Update stats about produced line of code.
Add support for Deactivated_Latency configuration.
Add support for disabling a user.

In this mode the user can only re-activate his account or use v2p as
if anonymous (no posting, no comment, no list of users, no search...).

Add migration script from previous DB schema.