Merge branch 'fas3_pingou_group_details' into FAS_3.0

    + Add missing double-quote from f2c7cc6c.
Groups' management #80
    + Add request membership
    + Add join group if no special requirements are needed.

Note: When registered user requests membership or joins a group,
      status infos don't get refreshed/updated.
      This's an expected behavior, you need to reload the page.
Groups' management #80
    + Add standard membership removal request.

Note: Do not include cascade removal.
Specify in the configuration what is the admin email to contact in case of problem
Add a simple username form
Adjust the fas.utils.notify.send_email to be able to send multiple emails at once
Import the module instead of importing method by method
Add notification when someone asks for a password reset
Add logic when user request a password reset
Let the html be less than 80 char long or so
Add link in the login page to ask for a password reset if lost
Add logic to change the password after resetting it
Flash an information message when the password was successfully updated
Log activity when use updates his/her password
Register activity when the user ask for a password reset
Register activity when the user resets his/her password
Use the AccountLogType.LOGGED_IN instead of the hard-coded integer
Add a 35 pixels wide fedora logo
Indentation fix and use the fedora_35 logo as place holder until we have another one
Add a 25 pixels wide Fedora logo and use it in the group list until we have another logo