Delay user activation.

[javier-molina]

From slack discussion about user activation emails it was suggested to allow a grace period before enforcing user activation.

The above will mean that a user creating an account will be allowed access to use ALA systems straight away which will have the following benefits:

• User is not put off with possible lost activation emails
• Registration process is streamlined
• We increase user retention.

Still the email activation is a needed requirement so tasks like resetting a password can be performed.

The suggested grace period is 2 to 4 weeks.

It is also suggested that reminders are displayed while user is navigating ALA systems so alert user that the account still needs to be activated.

The implementation of this ticket will require adjustments to #65

[Rita-C]

Implemented #65, put this issue on hold.