This add support for ALL UTF-8 symbolsets within the HTMLarea editor in Moodle.
Simply expands current "specials symbols"  tool button.

To install simply uncompress lang and lib directories into your local moodel directory.
local-lang contains an uncumplete translation to Spanish of block names.

Currently  NOT ALL UTF-8 blocks are currently visible. Only a sensible subset of them.
You can edit     $utf8_blocks = array( in    utf8_blocks.php
to modify the last item, 0=invisible, 1=invisible.