Local Variable Filters "Types to show": *NULL type* & *Uninitialized* are not remembered.

TEST CASE
---------

- Start debugging session
- Right click the Variables window > select "Filters..."

  This will give you a list of check boxes "Select types to show:"

    [x] Scalar Types
    [x] Array
    ...
    [ ] null type
    [ ] Uninitialized
    [x] Superglobal


- Now check, and uncheck, some types to show.
- Restart netbeans
- Start debugging session
- Right click the Variables window > select "Filters..."

EXPECTED: Types to show to remember which types to show.
ACTUAL: Types to show not remembered.