Congress: Moved to the template group called "base".
Github: Moved to a template group called "base".
AlternativeTo: Moved to a template group called "base".
Removed the old item.handlebars for the "base" group.
Congress: Remove `console.log`s
url
mangle the html before stripping
Merge pull request #606 from duckduckgo/jag/bttf/base_group

Convert AlternativeTo, GitHub, and Congress to template_group "base"