Replace the urxvt terminal emulator by termite.

urxvt has a few issues regarding font rendering, in particular with some
symbols used by liquidprompt.

.config/qtile/config.py

@@ -27,7 +27,7 @@ import os
 class ConfigWrapper:
     def __init__(self):
         self.mod = 'mod4'
-        self.term = 'urxvt'
+        self.term = 'termite'
         self.border_focus = '#424242'
         self.date_format = '%a %d %B %Y %H:%M'
 

.config/termite/config

@@ -0,0 +1,7 @@
+[options]
+font = inconsolata 9
+browser = chromium
+
+[colors]
+foreground = #ffffff
+background = rgba(0, 0, 0, 0.8)