1.3.8 (unstable)

* Self-hosting:
  - Change the name of the sub-folder used to store self-hosted database data.
  - Discover an available network port number, instead of hard-coding the port number.
  - Experimental use of avahi: The self-hosting postgres instance is advertised via avahi, 
    but you can't do anything useful with it.
* Details view: Add a vertical scrollbar, so that the window's minimum height is never too big 
  for average screens.