By Cassandra Feliciano, SFGate Miss California, Alyssa Campanella, took the Miss USA crown at Sunday&amp;#8217;s pageant in Las Vegas. The 21-year-old, now a full-time model, will be vying for the Miss Universe title in September. Here&amp;#8217;s what you don&amp;#8217;t know about the new Miss USA: &amp;#8211;She&amp;#8217;s only been in California for 18 months! Campanella is [...]