ckeditor for inline admin bug fixed with jquery

Conflicts:
	ckeditor/templates/ckeditor/widget.html
Django 1.7 compatibility fix.
Update ckeditor to 4.4.1.
Update tests.
Update project files.
[close #44] Use full package of ckeditor 4.4.4.

Fixes some problems with missing plugins or missing images for the editor GUI.
[close #45] Fix order of configuration steps.
[close #46] Validate image upload by extension in dummy image backend.
Fix settings variable name in readme.
Merge branch 'master' of https://github.com/whitescape/django-ckeditor into whitescape-master
Update jQuery URL.
Merge branch 'whitescape-master'
Make jQuery loading configurable.

CKEDITOR_JQUERY_URL becomes a required by default configuration variable.
Bump test requirements.
Update CHANGELOG.
Bump version.
Merge branch 'master' of https://github.com/riklaunim/django-ckeditor into riklaunim-master
Merge branch 'riklaunim-master'