Added Ignore Class Item

Related pull request: https://github.com/FPtje/DarkRP/pull/1364
Added Ignore Class Item Default

Shows ignoreClassItem format and sets "money_printer" as the default class to not remove (although it isn't by default assigned to a class and, as such, shouldn't be affected).
Amended #31

See https://github.com/FPtje/DarkRP/commit/f91bfdeba908bace7a862d40fde19c39cbc78c2c