Previously, most redirects targeted the root of the application.
This was okay for the first part of development where only one week would be
active, but would be annoying when using multiple weeks.
Change those redirects to call week::week.
Change the login path to be dependant on the current week as well,
so it can be correctly redirected.
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.
