Issues list and social media buttons
 This is a combination of 9 commits.
remove unused image files and stylesheets

adds twitter follow button'

link to twitter opens in new tab

realigns contact us mailing list checkbox

centers text vertically in large buttons

positions help button right of page

increases font size for help tab

adds linked in and twitter logo buttons

social media button padding
Merge branch 'heroku15' of github.com:ebanni/bulldog into ebanni-heroku15
Merge branch 'ebanni-heroku15'

This is a combination of 9 commits.
remove unused image files and stylesheets

adds twitter follow button'

link to twitter opens in new tab

realigns contact us mailing list checkbox

centers text vertically in large buttons

positions help button right of page

increases font size for help tab

adds linked in and twitter logo buttons

social media button padding