Added gz template_tag and tests for it.
Updating the templates to use gzip if it is enabled.
Updating views to pass a RequestContext

The {% gz %} template tag needs access to the request to determine if the request supports gzip compression.  Updated the view to return this as part of the context.
Including the template tag where needed.
Made the gz an assignment tag, and updated the templates.

This should prevent multiple calls to the function.
Merge branch 'master' into GZip-Static-Files

Conflicts:
	myjobs/tests/templatetags.py
	templates/base.html
	templates/myjobs/edit-account.html
Merge pull request #651 from DirectEmployers/GZip-Static-Files

GZip static files