Follows change from base36 to base64 for Django 1.8

Temporarily changed local environment to use local smtp server
Changed dev server to use smtp rather than console

The default is SMTP

Problems:
no 'home' url
app changed from contacts to users
Django 1.8 fixes
some Alfie/V4C/RuForum dependencies

Upgraded Django to 1.8.4

Tagging frontend

Added multiplicity field to Taxonomy

where the code reads better with is_multiple

add_terms() replaces add_term() and add_free_terms()

Conflicts:
	django/website/rest_api/tests/free_tagging_tests.py
	django/website/transport/tests/free_tagging_tests.py

add_terms() returns 400 if term does not exist and vocabulary is not
open

If the taxonomy has an open vocabulary, we create missing terms
rather than throw an exception

Replaced 'add_term' and 'add_free_terms' with 'add_terms'

Two error conditions:
Multiple terms passed from different taxonomies
Multiple terms passed when taxonomy does not support multiple terms

This matches the field name and simplifies the code somewhat

Unfortunately bootstrap-tagsinput does not have a configurable
delimiter so settle with ',' for now (no commas allowed in tags).