SDC-3119. UI: Upgrade to Angular version 1.5.6
SDC-3119. UI: Upgrade to Angular version 1.5.6

Change-Id: Ia8cc48a920f97154c3915e5975dc0a2db220ab42
Reviewed-on: https://review.streamsets.net/3082
Reviewed-by: Madhukar Devaraju <d22477479bbf55ba62bd822f4112c80f292c7805@streamsets.com>

studanshu/datacollector,rockmkd/datacollector,z123/datacollector,rockmkd/datacollector,SandishKumarHN/datacollector,SandishKumarHN/datacollector,streamsets/datacollector,streamsets/datacollector,WgStreamsets/datacollector,streamsets/datacollector,kunickiaj/datacollector,kunickiaj/datacollector,studanshu/datacollector,kunickiaj/datacollector,kunickiaj/datacollector,WgStreamsets/datacollector,studanshu/datacollector,streamsets/datacollector,SandishKumarHN/datacollector,z123/datacollector,WgStreamsets/datacollector,streamsets/datacollector,z123/datacollector,SandishKumarHN/datacollector,rockmkd/datacollector,WgStreamsets/datacollector,rockmkd/datacollector,WgStreamsets/datacollector,z123/datacollector,rockmkd/datacollector,studanshu/datacollector,SandishKumarHN/datacollector,z123/datacollector,kunickiaj/datacollector,studanshu/datacollector