Four days of fun Sept. 29-Oct. 2. Thursday events: The Rockin’ Hollywoods at the Hollywood Theatre, 2815 Johnson St. NE and Rock the Tent at Shaw’s, 1528 University Ave. NE, featuring four bands with Edison alumni ties. Friday is Homecoming with a parade around the school followed by the football game (Tommies vs. Columbia Heights), pasta dinner and Centennial Celebration show in the auditorium. Saturday is the All-Class Centennial Reunion at Nicollet Island Pavilion. Sunday is a pancake breakfast at…