Late last year, Cherry Red continued its series of reissues from Hi-NRG queen Hazell Dean with a trip back to the Essex-born singer’s earliest days.  The Decca Years, from the Strike Force Entertainment imprint, rounds up a dozen single sides originally released on the Decca label between 1975 and 1978, while a quartet of bonus tracks round up four ‘80s rarities. While Dean’s career took off with such dance-pop hits as “Searchin’ (I Gotta Find a Man),” “Whatever I Do (Wherever I Go),” and “Who’s Leaving Who,” she admits in a new…