Fix bugfix note

This fixes a bugfix note that was added because of #1293, which
pointed out that a change in a bugfix [1] broke backwards
compatibility.  The bugfix did not work as expected because a
variable was quoted when it should not have been.  This removes
the quotes around the variable, which brings back the expected
functionality.
FIx link to tox
Merge pull request #1327 from bodylabs/tox_link

FIx link to tox
FIX BaseSerializer.from_native has an altered signature

* base classes define it with one parameter
* BaseSerializer currently defines a second parameter, which we make optional here for method-dispatch passivity
Merge pull request #1325 from kevin-brown/compat_fix

Fix bugfix note
Merge pull request #1329 from estebistec/fix-serializer-from-native-sig

FIX BaseSerializer.from_native has an altered signature
Frontpage tweaks
Link to BrightAPI, and remove ad except from frontpage
Merge branch 'master' into logo
Added "nofollow" against docs link.
New font in logo
Merge branch 'logo'
Center logo
Drop the logo from the project README
Use www.django-rest-framework.org for docs instead of django-rest-framework.org due to issues with naked domains
Use www.django-rest-framework.org for docs instead of django-rest-framework.org due to issues with naked domains
fix docstring typos.
Merge pull request #1341 from fredrikmollerstrand/docstring-typo-fix

fix docstring typos.
Fix URL/Slug Field signatures in docs
Merge pull request #1342 from yprez/fix_field_doc

Fix URL/Slug Field signatures in docs