DALLAS (Reuters) - A Texas woman charged with violating obscenity laws for selling a sexual toy and explaining to her customer how to use it has had the case against her dismissed, court officials said on Monday. Joanne Webb, a mother of three and a former schoolteacher in the town of Burleson near Forth Worth, was facing up to a year in jail after she sold a vibrator at a private party to two undercover police officers posing as a married couple. The case received national attention because it touched off a debate on whether a person should be jailed...