project_base: use i4p mixins for sprites.
project_base: use i4p mixins for sprites.

ImaginationForPeople/imaginationforpeople,ImaginationForPeople/imaginationforpeople,ImaginationForPeople/imaginationforpeople,ImaginationForPeople/imaginationforpeople,ImaginationForPeople/imaginationforpeople,ImaginationForPeople/imaginationforpeople