Modify gitignore to include Vundle.vim.

Response to issue seen while cloning in a new computer.
Purge of git-tracked plugins.

- Using access to vimscripts with Vundle.
- Definitive removal of unwanted plugins.
Tmux, Zsh, BundleBag changes.

- Adding autojump again.
- Cleaning up unused plugins.
Add Vundle.vim as a proper git submodule.