When the template layout was made more mail-client friendly in 16.0
we used padding on a <td> node with
a color background to make it look like a button with centered text.
This approach makes most of the button unclickable.
The fix is to put the padding inside the link itself so that the whole
'button' is clickable. We already do this for most templates.
task-3168757
closesodoo/odoo#116945
X-original-commit: c40327db4f46040d4a6ed0231afcdefd5be47db5
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>