A fundraising drive for a beloved Boston teacher who was paralyzed from the waist down last week after he was afflicted with MRSA has raised nearly $14,000 in two days.By 7:30 last night, 247 people had donated a total of $13,895 on the “With-Wiley” GoFundMe page for Jeremiah E. Burke High School math teacher Christopher Wiley, who was diagnosed last week with a Methicillin-resistant Staphylococcus aureus infection — resistant to many of the antibiotics used to treat ordinary staph infections.