Sort bundles so they're easier to find, change threesome -> splice

Splice has issues with fugitive, need to address that
Allow disabling fugitive by defining g:disable_fugitive.

This should be used when launching vim to run splice, like

cmd = "vim -f $BASE $LOCAL $REMOTE $MERGED \
--cmd 'let g:disable_fugitive=1' -c 'SpliceInit'"" ''"