Make sidebar resizeable
Is your feature request related to a problem? Please describe.
We have a lot of instances and some instance names are quite long. In Pulse v6 the sidebar width isn't resizeable. Even on my giant monitor it isn't wide enough to read the instance names and becasue the horizontal scrollbar for the sidebar is all the way down the bottom it is really annoying scrolling back and forth to see the instance names to select the correct instance.
Describe the solution you'd like
If it was possible to just drag and resize the sidebar then this wouldn't be a problem at all!
Additional context