.profile: Add dircolors support, make safe for POSIX sh

Though it's still not quite where I want it

.profile

@@ -63,6 +63,16 @@ done
 # Then finally set up our path
 PATH="$desiredpath:$PATH"
 
+# Grab dircolors, if it exists
+if command -v dircolors > /dev/null 2>&1; then
+	dircolorsfile="$HOME/.config/dircolors"
+	if [ -r "$dircolorsfile" ]; then
+		eval "$(dircolors "$dircolorsfile")"
+	else
+		eval "$(dircolors -b)"
+	fi
+fi
+
 # Grab bash_completion, if it exists
 [ -f "/etc/profile.d/bash_completion.sh" ] && . "/etc/profile.d/bash_completion.sh"
 
@@ -148,7 +158,7 @@ alias todo='$EDITOR "$HOME/Documents/todo"'
 alias waitwhat='echo $?'
 
 # Source ~/.functions, if it exists
-[ -r "$HOME/.functions" ] && . "$HOME/.functions"
+[ -r "$HOME/.functions" ] && [ "$_baseshell" != "sh" ] && . "$HOME/.functions"
 
 # Set up a default PS1
 # This *should* work for all terminals. I know it works on ksh
@@ -205,7 +215,7 @@ case "$_baseshell" in
 		# I have a custom theme for that
 		;;
 	sh)
-		export PS1=''
+		export PS1='\$ '
 		;;
 	*)
 		export PS1='$(_ps1)'