vim: Remove vundle
vim: Switch from vundle to vam

Also, add i3-syntax plugin
vim: Remove puppet ftdetect ugly hax
vim: Fix vimwiki folding
vim: Remove obsolete swapper
vim: Fix swapping for terminal, add vim-{swap,pairs}
vim: Make main ctrlp open ctrlpproject in $HOME
vim: Re-add coveragepy
vim: Remove old coverage plugin
vim: Remove old unused XPT templates