This patch allows to remove icons from tree menus,
as in the "removing icons from treemenu" thread
of the "Help" Public Forum:
I'm attaching two distinct (even though almost equal)
one for phplm 3.0.0 and one for phplm 3.1.1.
Patch to remove icons from tree menus (phplm 3.0.0)
Patch to remove icons from tree menus (phplm 3.1.1)