Changed instances of 1 for True in the is_unlocked flag.
Changed instances of 1 for True in the is_unlocked flag.

I consider this to be an issue with the way I code (really C like).
There were inconsistencies in the assignment of this flag throughout the
code; some times I managed it as a 0/1 and some other times I consider
them to be false. It is fixed now

PolyPasswordHasher/PolyPasswordHasher-Django