Merge pull request #66 from jkuczm/fix_message_templates_select_order

Fix message templates select order
Merge pull request #68 from jkuczm/fix_admin_submission_template

Fix JavaScript error on "Add submission" page, updated to use jQuery.
Use latest django-setuptest release.
Run tests with 1.6 beta.
Dropped Django 1.3 compatibility workaround.
Updated model graph, closes #78.
Attempt Travis tests on Django 1.6b1

This time for real.
Small grammar issue in README.
Forgotten reference to database templates in tests.
Add settings proxy class

Adapt RICHTEXT_WIDGET setting.
Add NEWSLETTER_CONFIRM_EMAIL... settings

Add processing of NEWSLETTER_CONFIRM_EMAIL setting and
NEWSLETTER_CONFIRM_EMAIL_<ACTION> settings.
settings.newsletter_settings.CONFIRM_EMAIL_<ACTION> can be used to
decide whether confirmation email is needed for particular action
(subscribe, unsubscribe, update).
Optional skipping of email confirmation in views

Depending on CONFIRM_EMAIL_<ACTION> settings, <Action>RequestViews will
subscribe, update and unsubscribe user without email confirmation.
Adjust templates to skipping email confirmation
Document NEWSLETTER_CONFIRM_EMAIL... settings
Add override_settings for existing tests

Some of existing tests depend on confirm email settings being set to
default values. Since in test_settings those setting are not present
default values are used and travis tests pass, but if developer would
run tests in his/hers project with non-default values of settings tests
would fail. So added override_settings to make sure each test is run
with proper settings.
Add testing of action_done in template context

Subclasses of ActionRequestView now should pass additional variable
action_done to template context. This variable should be false if email
confirmation is on because actions can not be done in
<Action>RequestView.
Add tests for requests without email confirm.

Add test_<action>_request_post_no_email methods testing:
* response status
* context variables
* db changes
* mail outbox
for subscribe, unsubscribe and update requests with email confirmation
switched off.