shell/dirs: Fix the 'sha' dir location.
vimrc: Comment out neocomplcache plugin.
shell/aliases: Turn the `confirm` function into a y/n prompt.
shell/aliases: Add and modify some aliases.

This...
 - Adds a `bapro` function to get PKGBUILD file prototypes.
 - Renames `lb` to `books`.
 - Adds `netstat-color` support to the `netstat` aliases.
 - Adds a `line` alias to make a horizontal line.
 - Adds a `lb` to `lsblk` alias.
 - Removes some useless global aliases.
 - Cleans up the feh aliases.
 - Adds a `VI` to `vipe` global alias.
 - Adds a `shred` to `shred -n1` alias.