Updated external links

Updated Bootstrap, jQuery and Angular external links
Added a default LOGIN_URL

Added "account_login" as the default LOGIN_URL in settings.py.

This fixes a problem where the application will throw a 404 on the login page if you changed allauth from "/accounts" to anything else.
Remove django-discover-runner app.

Because it has been added to Django 1.6 as the default test runner.
Merge pull request #108 from mozillazg/remove_django-discover-runner

Remove django-discover-runner app
Update CONTRIBUTORS.txt
Changed page_title block to be html in the content block

base.html has no page_title block
Update CONTRIBUTORS.txt

Added my name as requested in #106 and #107
Merge pull request #106 from ikkebr/patch-1

Updated external links
Merge pull request #107 from ikkebr/patch-2

Added a default LOGIN_URL
Merge pull request #112 from ikkebr/patch-3

Update CONTRIBUTORS.txt
updating contrib
Merge pull request #110 from Tavistock/patch-1

Changed page_title block to be html in the content block
Merge pull request #113 from Tavistock/patch-2

updating contrib
Create CONTRIBUTING.rst
Expand regex match on users/urls.py UserDetailView
Merge pull request #115 from mattlinares/master

Expand regex match on users/urls.py UserDetailView
README: remove redundant settings option

Of the three `heroku run python ... manage.py ...` commands, two specified `--settings=config.settings`, which is redundant with what is in `manage.py`, and there is no reason for those two to have that option and for the third not to.
README: remove set config variables for SendGrid

Fix https://github.com/pydanny/cookiecutter-django/issues/117
settings: fix indentation for `CACHES`
Merge pull request #116 from glarrain/master

README: remove redundant settings option