The low-key screwball tone of Roshan Sethi’s “7 Days” is an efficient reminder that characters don’t have to love one another a complete lot for her actors to have nice chemistry. Take the high-strung Ravi (Karan Soni) and the unamused Rita (Geraldine Viswanathan), two Indian-American twentysomethings within the organized marriage relationship world, who’re caught collectively…
