Everyone's favorite laxative cake bakers, three Brooklyn School for Global Studies students, got some good news yesterday: Though initially charged with felonies for giving their teachers and other staffers a cake spiked with Dulcolax (it was supposed to be a prank, but many went to the hospital in pain), the Brooklyn DA's office lowered the charges to misdemeanors, saying, "The injuries were minimal." The Daily News reported one student cried after being chased by photographers,......