Turn off USE_THOUSAND_SEPARATOR so that templating of values without filters don't magically autofilter

[Pomax]

We're currently running with Django's USE_THOUSAND_SEPARATOR set to True, which automatically converts any and all numbers used in templating to a string representation with separators in it, which means you can't rely on numbers actually being numbers. Let's turn this off (which is the default) and instead make sure that any number that needs to be localised explicitly does so through the use of the intcomma filter instead.

• when we do, also roll back Format Pulse profile ID as string #7354