Opening of two signature projects at Newark Liberty Airport, the new Terminal A and replacement of the aging monorail, are facing setbacks, Port Authority officials confirmed Thursday. Completion of the new Terminal A has been delayed until the end of the year and replacement of the aging monorail is off its proposed schedule, Port Authority said. This is the third delay in opening the first phase of the $2.7 billion replacement of the aging original Terminal A. Construction started construction in 2018. “We expect the new terminal will open before the end of the year,” said Scott Ladd, a spok…