Revert "remove unused w-icon* styles"

This reverts commit dc93163fa90cf3807856c5b4eeb9be208068dcf6.
Revert "inline styles in mail_view"

This reverts commit 9bf6770d5eeacc4312b84f105a49850c93da48c3.
Revert "upgrade to roadie-rails"

This reverts commit 94c2ca382af1046329b66baea98099b0b563fab7.
Revert "Revert to roadie gem for email css inline style conversion"

This reverts commit 547a7fad6122df77102cd4bbeb0aeb8507e56d9a.
Revert "use roadie-rails instead of roadie"

This reverts commit f4d9c3e7171f8897e16b23ccf8e04900acbf2017.

Conflicts:
	Gemfile
	Gemfile.lock
Revert "use url helper for stylesheet in communicart_base helper"

This reverts commit b6320c74a57fe9b7ab5bf02450517845a489ec95.
Revert "use url helpers for image tags"

This reverts commit 286c6eb7cf178fa534124e9061f1bf38b575fc67.
Merge pull request #125 from 18F/downgrade_gem_updates

Downgrade gem updates