Move bootstrap dir to conform to dotfile structure

Removed underscore from bootstrap directory, since the repository does
not organize itself through underscore prefixes anymore.

Fixed package gathering git-hook to respect new bootstrap directory.

bootstrap/.config/sh/alias.d/dotlink.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env sh
+# relink all stowed files from anywhere
+# grepping is to remove meaningless stderr lines until this bug is fixed:
+# https://github.com/aspiers/stow/issues/65
+#
+# redirection is a neat way to filter stderr msgs by redirecting stderr
+# to stdout in a subshell, grepping in it, and redirecting back to stderr:
+# https://stackoverflow.com/a/15936384
+#
+# to customize this to your own needs, change the `push folder` to the
+# location of your dotfiles (stow) repository
+alias dotlink="pushd ~/.dotfiles;\
+  stow -R */ 2> >(grep -v 'Absolute/relative mismatch between Stow dir' 1>&2) ;\
+  popd"