client credentials should be optional (fix #759)

client credentials should only be required on token
request

Signed-off-by: Fernando Rocha <fernandogrd@gmail.com>
Complete remove of client checks from oauth2

Signed-off-by: Fernando Rocha <fernandogrd@gmail.com>
Remove client credentials from all OAuth 2 tests
Remove oauth2-provider backends reference from compat.py
Fixed DjangoFilterBackend not returning a query set.

Fixed bug unveiled in #682.

Signed-off-by: Kevin Stone <kevinastone@gmail.com>
Added unit test for failing DjangoFilterBackend on SingleObjectMixin that was resolved in b10663e02408404844aca4b362aa24df816aca98

Signed-off-by: Kevin Stone <kevinastone@gmail.com>
Minor tweak
Note on using curl with token auth
Add search and next/prev
Change strapline
Removed pagination regression special case for Django<1.4.   Having DjangoFilterBackend return an actual query set fixes this issue.

Signed-off-by: Kevin Stone <kevinastone@gmail.com>
Merge pull request #768 from kevinastone/master

Fixeds DjangoFilterBackend Incompatibility with SingleObjectMixin
Merge pull request #766 from glic3rinu/master

Refactored urlize_quoted_links based on Dango 1.5 urlize
Merge pull request #767 from tomchristie/fix-oauth2-token-only

Fix OAuth 2 token only
Update release-notes.md
Fix typo
Tweak strapline
Merge branch 'master' of https://github.com/tomchristie/django-rest-framework
Spelling/grammar fixes.
Merge pull request #769 from vshih/master

Spelling/grammar fixes.