trade options: reduce duplication by using getOption internally
trade options: reduce duplication by using getOption internally

Fixes an issue where trade race options did not have a function to enable
toggles. It also reduces code duplication by taking advantage of the
getOption function internally.

Signed-off-by: Jacob Keller <74ec1f46a68d238888726a00aa611ba6343172e2@gmail.com>

oliversalzburg/cbc-kitten-scientists,oliversalzburg/cbc-kitten-scientists,oliversalzburg/cbc-kitten-scientists,cameroncondry/cbc-kitten-scientists,rdancer/cbc-kitten-scientists