Dispatcher: crengine contrast (gamma)

frontend/dispatcher.lua

@@ -140,7 +140,7 @@ local settingsList = {
     line_spacing = {category="absolutenumber", rolling=true, separator=true,},
     font_size = {category="absolutenumber", title=_("Set font size to %1"), rolling=true},
     font_weight = {category="string", rolling=true},
-    --font_gamma = {category="string", rolling=true},
+    font_gamma = {category="string", rolling=true},
     font_hinting = {category="string", rolling=true},
     font_kerning = {category="string", rolling=true, separator=true,},
     status_line = {category="string", rolling=true},
@@ -248,7 +248,7 @@ local dispatcher_menu_order = {
     "increase_font",
     "decrease_font",
     "font_size",
-    --"font_gamma",
+    "font_gamma",
     "font_weight",
     "font_hinting",
     "font_kerning",