Don't make Blinkenlight statuschar configurable

Allowing to specify the char to use in the BLinkenlights is a bit over
the top and bloats our default offlineimap.conf. The dot is just fine,
so let us settle for it and cut the example config file by an unneeded
section.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>

Changelog.draft.rst

@@ -23,6 +23,9 @@ Changes
 * Refactor our IMAPServer class. Background work without user-visible
   changes.
 
+* Remove the configurability of the Blinkenlights statuschar. It
+  cluttered the main configuration file for little gain.
+
 Bug Fixes
 ---------
 

offlineimap.conf

@@ -141,10 +141,6 @@ footer = "\n"
 # Note that this filter can be used only to further restrict mbnames
 # to a subset of folders that pass the account's folderfilter.
 
-[ui.Curses.Blinkenlights]
-# Character used to indicate thread status.
-
-statuschar = .
 
 ##################################################
 # Accounts

offlineimap/ui/Curses.py

@@ -230,7 +230,7 @@ class CursesThreadFrame:
             if self.getcolor() == 'black':
                 self.window.addstr(self.y, self.x, ' ', self.color)
             else:
-                self.window.addstr(self.y, self.x, self.ui.config.getdefault("ui.Curses.Blinkenlights", "statuschar", '.'), self.color)
+                self.window.addstr(self.y, self.x, '.', self.color)
             self.c.stdscr.move(self.c.height - 1, self.c.width - 1)
             self.window.refresh()
         self.c.locked(lockedstuff)