Merge branch '331-user-registration' into 353-password-reset

aleksis/core/menus.py

aleksis/core/mixins.py

aleksis/core/models.py

aleksis/core/preferences.py

aleksis/core/rules.py

aleksis/core/settings.py

aleksis/core/static/js/main.js

aleksis/core/static/style.scss

aleksis/core/templates/account/password_change.html

aleksis/core/templates/dynamic_preferences/form.html

...ore/templates/material/fields/colorfield_colorwidget.html

aleksis/core/templatetags/dashboard.py

aleksis/core/util/ldap.py