[ADD] added instantclick library to load data faster in anonymous mode

Hello,
I've added instantclick library to load data faster while using website in anonymous mode. For this , I've created website_anonymous module, which will load the library after installing it.
Task Link : https://openerp.my.openerp.com/web#id=7539&view_type=form&model=project.task&menu_id=3942&action=327
Pad Link : https://pad.odoo.com/p/r.tGV9xZRmhxrMc5UF
Thanks,
DJA.
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