Panzoom should only work on canvas, not the containing div

**Describe the bug**
Panzoom center function doesn't work because it centers the whole div where the canvas is located in.

**Reporter**
@philipsens

**Category**

- Flow

**To Reproduce**
Steps to reproduce the behavior:

1. Drag outside of canvas or try to center a small canvas

**Expected behavior**
Center of canvas

**Screenshots**

**Additional context**
The arrows are also being dragged and zoomed, maybe they should float like the action buttons.