Fix typo

Signed-off-by: Julien Danjou <julien@danjou.info>
Send mail when subscription will expire. Closes #42.

Also:

 * fix tests for pdf (due to new laptop, don't know why pdf changed, maybe 32bit to 64bit swith)
 * fix get_users_with_trial_subscription
Merge branch 'master' of https://github.com/jd/aemanager into jd-master
Compiled translation
Added payement delay on proposal pdf. Closes #174.
Added tos on subscribe page. Closes #175.
Managed formation training tax. Closes #29.
Added phone number and professional email on propoal and profile. Closes #159.
Added help text for penalty rate. Closes #163.
Added estimated taxes. Closes #167.
Added version. Closes #178.
Added wsgi conf sample.
added apache virtualhost sample.
Added file upload for contracts and proposals. Closes #66.
Added comment field on contact. Closes #181.
Can add multiple phonenumbers at once. Closes #182.
Added customer header on proposal and invoice. Closes #148.
Delete contract files when replaced. Closes #183.
Upload size limited in apache conf. Closes #184.
Allow admin to close and reopen issues. Closes #186.