By Scott Murdoch Dec 1 (Reuters) - Embattled stock exchange operator Australian Securities Exchange is facing fresh pressure to enact its turnaround plan, after its announcements platform suffered an outage on Monday, forcing about 80 stocks to be ​placed on a trading halt. The platform went down just before 9 a.m. (2200 GMT) and was still not ‌fully operational at the close of trade on Monday about 4 p.m. (0500 GMT). However, an ASX spokesperson said that, as of 6:45 p.m. ‌(0745 GMT), it had "largely r ...