Fixing an issue when refreshing the slave.html page on IE. #106
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When refreshing the
slave.html
page on IE, attester creates an iframe with the next task to be executed, but IE loads the previous URL of the iframe (trying to restore it), leading to a different task being executed on the client than the one the server thinks is being executed, leading to wrong results.This pull request fixes the issue by first loading an empty iframe and ignoring any result until a task is sent from the server.