Add another missing migration for UppercaseCharField

Unfortunately, abstract versions of addresses are located in the address
app, but then used in e.g. order/models.py. That's why I missed the
migration for this one.

Oh well, all good things come in three's!
Updated dependencies for south migrations
Disable template timings panel...

...as it slows the page load down to a crawl.
Adjust form templatetag to handle missing field var

When a non-existant field gets passed, the templatetag was raising an
unseemly AttributeError.  This change checks to see if the passed var is
actually a form field to avoid said error.
Include LICENSE and AUTHORS in package
Allow month field widget to be overridden in bankcard form

For instance, if you need to adjust the HTML formatting of the
multi-widget.
Pass lines to email contect for testing command

Some emails take a set of lines passed in explicitly.  This changes
helps test such situations.
Add South introspection rule for UppercaseCharField
Allow form labels to contain HTML
README adjustments

- Presentations link
- Commercial support update
Correct image URL in README
Adjust presentation image size
Add mixed logo image
Add eway extension to readme
Merge pull request #782 from tangentlabs/feature/add_eway_extension_to_docs

Add eway extension to readme
Handle products without a category in GA subission

Without this change, the category is "None"
Don't show country field if only one is available

This affects the shipping address form in checkout.