Don't display dotfiles or reverse sort with ll alias.

The ll alias is a very common default for bash in Linux distributions, so use
that definition.

lib/aliases.zsh

@@ -18,7 +18,7 @@ alias history='fc -l 1'
 # List direcory contents
 alias lsa='ls -lah'
 alias l='ls -la'
-alias ll='ls -alr'
+alias ll='ls -l'
 alias sl=ls # often screw this up
 
 alias afind='ack-grep -il'