Implement a way for admins to introduce new weeks and set them as the last active one.
The last active week is the last one that is accessible to players, and will also prevent
the graph from being displayed.
Implement arrows for navigating between the weeks in the HTML.
Now, the graph will only show when everyone has voted and the week is no longer
the last one active.
This is to minimize information gathering by looking during voting.
Don't fetch the vote data for the admin : it is not used, so no need to
query the database.
Update README with new TODOs and clean up main includes a bit.
This first version allows login of pre-existing users, creation and update of truths
by admins, vote on the truths by users, their display as well as a simple graph
for the vote results.
Everything persisting in a SQLite database.
