Organized alias files and update set-from-git

Split .bash_aliases into other files for git, laptop, PC and school.

dotfiles/aliases/.laptop_aliases

@@ -0,0 +1,7 @@
+if [ "$(hostname)" == "X1-Carbon" ]; then
+	xmodmap -e "keycode 9 = Escape"
+	xmodmap -e "keycode 22 = Home"
+	xmodmap -e "keycode 119 = End"
+	xmodmap -e "keycode 110 = Delete"
+	xmodmap -e "keycode 115 = BackSpace"
+fi