Adjusting the Default Country for a petition, social sharing enhancements, and overall clean up

With a couple of recent releases of Soapbox, we've added some features and cleaned up some issues with the Petitions app. Those included:

• Allowing the administrator to set the default country for a given petition to something other than the United States. Learn more >>
• Addressing issues with the performance of a petition when the URL hasn't be customized (e.g., it uses the "/component/..." URL) to ensure all views load properly
• Updating the Facebook social sharing feature to explicitly populate Facebook Open Graph tags
• Addressing display issues on mobile devices, particularly Android devices
• Ensuring that edit access is restored to a petition in the administrator when another user exits edit mode

Happy Soapboxing!