Fixed the context passing for inclusion tags in cmsplugin_blog_tags.py

The original context was not being updated so every tag had its own context
which did not include the 'user' or similar variables that might be useful
in the inclusion tags' template.
Merge pull request #79 from failedguidedog/tags_context_fix

Fixed the context passing for inclusion tags in cmsplugin_blog_tags.py
Fix tests to work with Django 1.3 and 1.4.  Make Django 1.3 the default for runtests.sh
Add testcase and fix for Issue #80, enabling Django 1.4 timezone support
Merge upstream changes
Add requirements file for django-1.4
Merge remote-tracking branch 'upstream/develop' into bhyc_enhancements

Conflicts:
	cmsplugin_blog/templatetags/cmsplugin_blog_tags.py
reset __init__.py to upstream version
Merge branch 'timezone_fix' into bhyc_enhancements