Adjust SciView's Plots resolution/dpi Follow

Upon further inspection, actually there's nothing wrong with the SciView Plots panel. I just had to define a larger figure size explicitly for instance via:

```
import matplotlib.pyplot as plt

fig, ax = plt.subplots(figsize=(10, 10))
ax.plot(x, y)
```

For information only:

The size of the plots can also be changed globally for a whole script:

plt.rcParams['figure.figsize'] = (15, 5)