Adds mail list to sign up process, realigns checkboxes  and updates bootstrap gem.  This is a combination of 5 commits.
adds to accounts model and controller and accounts/new view for mailling list sign up

adds groups to mailing list process on sign up

removes old bootstrap gems

changes to support bootstrap gem update

aligns checkboxes for remember me and mailling lists
Merge pull request #60 from ebanni/maillist

Adds mail list to sign up process, realigns checkboxes (remember me/mail list) and updates boot...