Necessary fixes and a new query field!

Couple of fixes here:

- results.php should be named Results.php (fixed)
- Query.php had some issues with variable inheritance:
_limit
_skip
_order
_count

are all protected variables in Parse.php. Since Query.php inherits from Parse.php, we were having a bit of a collision. Fixed that too.

- Added 'whereRelatedTo' to Query.php to help with relational queries.

All of this is for the branded dashboard project.

Thanks Dan!