Is your feature request related to a problem? Please describe.
When in normal view, the subscription list takes a lot of screen space when using freshrss on a tablet screen in portrait orientation.

Describe the solution you’d like
Enable a show/hide subscription list pane to the top menu.

Describe alternatives you’ve considered
Have:

1. Reading view abide by the "Show articles unfolded by default" option in Settings (Reading tab) or,
2. Have separate "Show articles unfolded by default" settings for Normal and Reading views in Settings.