Show title of forum post in window header
Description
If a thread is open, you can't see the tiltle unless you scroll to the beginning. It would be nice, to have the thread title in the windows haeder, eg. foodsharing | SomeGroup | Forum | Threadtitle
Goal
better clarity about what thread I'm reading while scrolling downwards
Evidence
see above
Solution
Add title in RegionControl.php when composing a new thread or opening an existing one (line 387ff)
Links / references
none