Is there a way to use the grid without any cascading? ('cascade': 'left'/right/etc), so I can place my widgets wherever I want vertically or horizontally (without them automatically sticking to the borders)?
Yes, if you set the cascade value to anything other than those values, it will disable the cascade. In the demo example, you can use the "Off" setting to try it out.
Is there a way to use the grid without any cascading? ('cascade': 'left'/right/etc), so I can place my widgets wherever I want vertically or horizontally (without them automatically sticking to the borders)?