fix(plot_base): not content margin for plot_widget window
Description
Reduce the content margin of GraphicalLayoutWidget to 0,0,0,0. Plots should be more compact.
Related Issues
closes #513 (closed)
Screenshots / GIFs (if applicable)
Additional Comments
The top border is reserved for title, tbh I don't want to remove it, could cause issues on pyqtgraph side.
Edited by wyzula_j

