Misc. Tweaks

- Billing Method w/ only PayPal. Regression (fixed). See: http://www.s2member.com/forums/topic/paypal-pro-form-billing-method-bug-returns/#post-55123
- Updating timeout on upgrade processor in s2Member® Pro.
- Updating .gitignore files to account for AWS Elastic Beanstalk config.
Merge remote-tracking branch 'origin/000000-dev' into 000000-dev