Left toolbar position is lost when switching between fullscreen mode. (#283)

The left toolbar contains the various shapes that can be added to diagrams. If you resize this toolbar and then switch into fullscreen mode and back it resets its size the default instead of restoring the position you set it to.

This affects the fullscreen mode in the same way. If you are adjust the size of this toolbar in fullscreen mode, then switch to normal mode and back again, the toolbar position is lost. This is particularly unfortunate because in fullscreen mode the default size of this toolbar does not even display the toolbar items at all and all you can see is a list of keyboard shortcuts but you can't tell what they are the shortcuts for.