Throttle rule for University of Haifa event

New throttle rule:
    From ....... 2014-12-18 11:00 UTC+2 (event starts at 14)
    To ......... 2014-12-18 20:00 UTC+2
    Users ...... 55 (expected attendees: 35)
    Projects ... hewiki, commonswiki
    IPs ........ 132.74.0.0/16, 132.75.0.0/16

Cleaned former throttle rules.

Bug: T78752
Change-Id: Ic22405b68919a897cf5b6eefb4045570da787ba8