Political insiders were abuzz this week as calculations were made and some bets taken on the future viability of Mayor William L. Courtright.  There were frantic phone calls last weekend that the Old Man was going to throw in the towel. "He'll do the honorable thing," said one Lackawanna County Democrat.  Courtright was going to resign. By Sunday night, the Mayor made clear through the press and his intermediaries: he is innocent and he is not going anywhere. Here is what we know: FBI agents executed search warrants and conducted a raid of City Hall and the Mayor's West Mountain home on Wednesday,...