Added a exception in paranthesis_around_minus where a paranthesis is not added if the symbol before minus is )
Added a exception in paranthesis_around_minus where a paranthesis is not added if the symbol before minus is )

MathGen/oppgavegenerator,w0pke/oppgavegenerator,w0pke/oppgavegenerator,MathGen/oppgavegenerator,w0pke/oppgavegenerator,MathGen/oppgavegenerator