Added title blocks to the default templates
Removed the need for payments.context_processors by adding a PaymentsContextMixin which has been added to all views that need it.
Wrapped text to comply with PEP8 E501
More PEP8 fixes
Merge pull request #35 from epicserve/remove_context_processors

Removed the need for payments.context_processors
Merge pull request #34 from epicserve/template_title_blocks

Added title blocks to the default templates