pdate these three american towers from proposed to UC

[kazpmk]

#1Electra in San Diego began construction. Change from proposed to UC.
http://skyscraperpage.com/cities/?buildingID=32331

#2Turnberry Place Tower four began constrcution. Update from proposed to UC.
http://skyscraperpage.com/cities/?buildingID=4596

#3The Regatta in Philadelphia began construction. Update from proposed to UC. The height was also increased to 100 m.


http://skyscraperpage.com/cities/?buildingID=24670

[John Hinds]

Done.