Updated book link in HATEOAS page

Per http://www.crummy.com/2013/10/03/0 , the new book is *RESTful Web APIs* and the old book, *RESTful Web Services*, is obsolete.
add glyphicons font files
Merge pull request #2022 from brainwane/patch-1

Updated book link in HATEOAS page
Merge pull request #2024 from defrex/master

Add Glyphicons font files to solve collectstatic issue
Support None if initial part of dotted lookup returns None. Closes #1223.
Fix failing copy of fields when RegexValidator is used. Closes #1954.
Stronger calling out of 'DjangoObjectPermissionsFilter'. Closes #1934.
Copy accepted_renderer and accepted_media_type when cloing a request. Closes #1950.
Add docs on request.accepted_renderer and .accepted_media_type
Minor cleanup
Pass through kwargs to both Serializer and ListSerializer
ModelField should support max_length. Closes #2018.
Support for bulk create. Closes #1965.
More precise assertion error for bulk update
Fix exception style for py3
Fix tests for py2/3 compat
Drop usage of SortedDict. Closes #2027.
Fixed base_url duplication in FileField.use_url

Django already joins base_url when constructing FileField.url
Tests & fixes for list serialization
Merge pull request #2038 from NextHub/master

Fixed base_url duplication in FileField.use_url