If you think Photoshopping is reserved for flashy advertisements and glossy magazine covers, think again &ndash; even politicians can&rsquo;t escape the wrath of the digital airbrush.&nbsp;Case in point: First-year Canadian MP Rathika Sitsabaiesan is currently at the center of a Photoshopping controversy after someone deemed her cleavage too sexy for Parliament. According to Canadian blog [...]