Add 'gra' alias for 'gr'(aph) showing all branches

dotfiles/gittum/before.gitconfig

   dc = !clear && git diff --cached
   gr = log --graph --full-history --color\
        --pretty=tformat:"%x1b[31m%h%x09%x1b[32m%d%x1b[0m%x20%s%x1b[0m"
+  gra = log --all --graph --full-history --color\
+       --pretty=tformat:"%x1b[31m%h%x09%x1b[32m%d%x1b[0m%x20%s%x1b[0m"
   grr = log --graph --full-history --color\
         --pretty=tformat:"%x1b[31m%h%x09%x1b[32m%d%x1b[0m%x20%s%x1b[0m"\
         --simplify-by-decoration