* Emaar bounces back ahead of mall unit IPO, lifts Dubai * Abu Dhabi's Waha Capital rises after $575 mln financing * Qatar may slow ahead of FIFA probe results * Saudi banks pull back again * But insurers surge as price war seen over By Olzhas Auyezov DUBAI, Sept 3 (Reuters) - Bourses in the United Arab Emirates outperformed the region on Wednesday as Dubai developer Emaar Properties rebounded after profit-taking and Abu Dhabi's Waha Capital jumped after securing $575 million in fresh funding. Dubai's main index rose 1. ...