Bug 7589 - tinymce editor broken in .deb packages - in 'en' templates

Bug 7589 - tinymce editor broken in .deb packages - in 'en' templates

this patch fixes a glitchy symlink to tiny_mce

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Note that you have to *remove* koha-common then install fresh in order
to recreate the symlink.

VERY IMPORTANT!!! debian/rules MUST USE TABS. USE -n WHEN COMMITING
THIS PATCH, AND DO NOT REPLACE TABS WITH SPACES.
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>