plugin account, tools: some cleaning account + email and password tools: - plugin misc account has been reordered and cleaned a bit. - new xmpp_domain setting is used to get the domain name of main XMPP server - password generation method has been moved to tools.utils - email sending method has been moved to tools.email

Use this module to temporary store files that need to be integrated to other
projects such as Wokkel.

For example, the changeset that introduced this folder adds RSM (XEP-0059)
support to Wokkel. The files in sat.tmp.wokkel are imported over the initial
wokkel files from sat.plugins.__init__.py