user_template and other files are now accessed via JSONStorage, which
has dictionary like attributes for each file which can be used like a
dictionary, without the need to manually read and write the file. This
was done so that other storage types (e.g a database) can be added in
future.
--get_policy is now --get_defaults, as it now allows you to store a
default user configuration and displayPreferences, which define the
layout of the home screen. It can also now display non publicly visible
accounts.
The admin page now has the option to send an invite to an email address.
Since there are now two email types (invites and pw resets), the new
sections have been added to config.ini, and email_template and
email_plaintext have been renamed to email_html and email_text
respectively.
