Add advanced test for zinnia.markups
Merge branch 'markups'
Updating number of tests
Does not make distinction anymore if django_xmlrpc is not installed
Fix flags tests launched with the default django test runner
Updating dependancies for tox
Using latest version of zc.buildout
Tox now also test on Python3.3
Better support of Python3
Skip test using custom import function for Python 2.6
Centralizing the safe filter for object_content
Apply the same rules for excerpt in every import command
Exclude Python3 specific imports from coverage
Add a new test about comment denormalization
Fix coverage page link
Implementing the future API for preview in the templates
Implementing the Preview object
Adding tests for preview
fix timezone support in wp2zinnia management command

In the WP export, 'post_date' represents the timezone indicated by the server, and 'post_date_gmt' represents GMT (or possibly UTC) for the same time.  On import, the management command is currently using the local timestamp but UTC as the timezone with which to interpret it, making all the times off by the timezone offset.

This solution (for entries and comments) uses the gmt values and 'GMT' as the timezone when saving datetimes.
prevent 500 when 'c' GET value is not an int