With rainbow flags, balloons, music-pumping floats and thousands of participants and spectators, the 44th Annual Pride March turned the lavender-striped route from Fifth Ave. from Midtown down to the Village and then along Christopher St. to Greenwich St. into a joyous celebration for the soul and senses Sunday afternoon. Transgender star Laverne Cox, of the hot Netflix series “Orange Is the New Black,” opposite page, in convertible, who recently scored TIME magazine’s cover, was a grand marshal. After a year of amazing gay civil rights gains, the mood was even more euphoric than usual.