Is your feature request related to a problem? Please describe.
Nightly fails multiple times for a long period of time and goes unnoticed for weeks and months, and we always get to kn

Custom css themes shouldn't be too difficult. Probably pass in a url parameter for the them you want and then handle it in the template. Night mode has been requested.

Use new presets

The wikipedia api provides a section an id (1 upwards), it'd be nice if that would also be included.

Example: https://en.wikipedia.org/w/api.php?format=xml&action=parse&prop=sections&page=License

Currently (57162a79) Zoom in/out/reset action applied to all the opened tabs.

Actual result

Pressing Ctrl++ Ctrl+- (or zoom in/out with mouse wheel) is applied to every opened tab at the moment.

Expected result

Pressing Ctrl++ Ctrl+- (or zoom in/out with mouse wheel) should be applied to the current (active) tab only, as it is in all major web browsers.

Additional detai