board/common: replace edit and editor with symlink to nano

The nano editor has been shown, over and over again, to be more
user-friendly to complete UNIX/Linux beginners than even Mg.

Also, change the default pager/less to be less (again), it was
very confusing to have less be most and more just be more.  We
recommend scripts to use pager and edit/editor to call system
safe defaults.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

board/common/rootfs/bin/help

@@ -269,7 +269,10 @@ editor()
 			cat <<EOF
 ${H1}Summary                                                                        ${H0}
 
-Use Mg if you are a beginner.  This is also the default for the 'edit' alias.
+Use Mg or GNU Nano if you are a beginner.  The system is set up to so you can
+use the 'edit' command, which will start GNU Nano:
+
+    edit /etc/rc.local                       # Starts GNU Nano
 
 EOF
 			;;

board/common/rootfs/etc/profile.d/convenience.sh

@@ -3,15 +3,13 @@ alias la='ls -A'
 alias ll='ls -alF'
 alias ls='ls --color=auto'
 
-alias less=most
+export EDITOR=/usr/bin/edit
+alias less=pager
 alias vim='vi'
 alias view='vi -R'
 alias emacs='mg'
-alias edit='mg'
-alias editor=edit
 alias sensible-editor=edit
-alias sensible-pager=less
-export EDITOR=/usr/bin/mg
+alias sensible-pager=pager
 
 alias ip='ip --color=auto'
 alias ipb='ip -br'

board/common/rootfs/usr/bin/edit

@@ -0,0 +1 @@
+nano

board/common/rootfs/usr/bin/editor

@@ -0,0 +1 @@
+nano

board/common/rootfs/usr/bin/pager

@@ -0,0 +1 @@
+less

board/common/rootfs/usr/bin/pico

@@ -0,0 +1 @@
+nano