- Added Gradient Descent to the Maximization algorithms.

- Added Gradient Descent to the Maximization algorithms.
- Added drag and drop buttons on the Maximization panel for painting gaussians and gradients on the reward map.
- Added icons for the drawing tools, made main icons smaller (will add options to make it user-defineable)
- Integrated Particle Filters into the basic maximization tools (that are now called Stochastic Methods)
- Added a projection display for Linear Projection methods, that now use naive bayes after projections. A "Set Projection/Set Source" button now allows to swap the samples in the canvas with the projected samples, and vice versa.