Amazon Studios has signed an overall deal with a creative force behind another one of its popular comedy series, Catastrophe co-creator and star Sharon Horgan. In addition to the overall deal for Horgan, Amazon Studios has signed a first-look deal with Horgan and and Clelia Mountford's UK-based Merman. The pact gives the studio first-look rights to Merman concepts to which Horgan is attached and remake rights to Merman-produced television series. Horgan’s longtime TV…