Remove some interpolations from default config

qutebrowser/config/configdata.py

@@ -656,14 +656,14 @@ DATA = OrderedDict([
         ('<Alt-8>', 'tab-focus 8'),
         ('<Alt-9>', 'tab-focus 9'),
         ('<Backspace>', 'back'),
-        ('<Left>', '${h}'),
-        ('<Down>', '${j}'),
-        ('<Up>', '${k}'),
-        ('<Right>', '${l}'),
-        ('<Shift-Space>', '${<Ctrl-B>}'),
-        ('<Space>', '${<Ctrl-F>}'),
-        ('<PgUp>', '${<Ctrl-B>}'),
-        ('<PgDown>', '${<Ctrl-F>}'),
+        ('<Left>', 'scroll -50 0'),
+        ('<Down>', 'scroll 0 50'),
+        ('<Up>', 'scroll 0 -50'),
+        ('<Right>', 'scroll 50 0'),
+        ('<Shift-Space>', 'scroll-page 0 -1'),
+        ('<Space>', 'scroll-page 0 1'),
+        ('<PgUp>', 'scroll-page 0 -1'),
+        ('<PgDown>', 'scroll-page 0 1'),
         ('<Ctrl-h>', 'home'),
         ('<Ctrl-s>', 'stop'),
         ('<Ctrl-Alt-p>', 'print'),