Encoding and rejoin fixes:
-encodings for targets can now be set back to what the identity considers default
-converted save-encoding logic to iterator, removed apparently unnecessary sorting
-toolbar version of the encoding selector will now update when the editor is closed
-made "Rejoin Channel" action behave properly when in toolbar (why you'd want it in the toolbar remains unknown)
-refined higlighting of kick highlight slightly
-disallow rejoin attempts when server has been disconnected