Return there was needed
indentation
Do not loose uploaded photos in case of imgur failure

If the imgur upload fails, the exception is handled so that the dive
is anyways updated with the previous uploaded photos within the same
task.

Also, it will keep trying to add the subsequent photos.

A task should run periodically to see if there are leftovers in the
blobstore.

It should also schedule another task to retry the failed uploads,
and notify an administrator that something might be going on.
Link to subsurface
Added thumbnail for opera
Stub to generate personal user string

Stub to create and then decode the user string to avoid
the authentication.
Replaced dive flag with identical svg
Can associate dives on upload

Uses the header X-UID to associate the dive to the user.

Currently it is like a password but it will be changed into a more
safe (changeable) value.