Successfully incorporated add-ons to algos with appropriate controls

- Added delegation for dead-cells checkbox
- Added ->refreshControls() to reset values and make sure controls
match class' values
- Added ->checkLastMoveTwins() - function doesnt work
- Removed ->stepSolver(), no longer in use
- Removed ->dumbBruteRecurse, replaced with ->groundZeroAlgo
- Removed wall and bwall from ->groundZeroAlgo
- Cleaned up code for ->groundZeroAlgo method
- Trimmed 'dead-cells' check to a simple line of code
- Refactored the possible-values iterations for ->groundZeroAlgo
- Fixed bug with ->getBoxCells leaving out last cell