Add option to show numbers before menu items (default = OFF)

Based on OpenPLi/enigma2#563

data/setup.xml

@@ -27,6 +27,7 @@
 		<item level="0" text="Setup mode" description="Configure which access level to use for the configuration menu. Expert level gives access to all items.">config.usage.setup_level</item>
 		<item level="0" text="Sort order for menu entries" description="This option allows you to hide and sort menu entries. When selecting user you can change order and hide menu items via the blue button">config.usage.menu_sort_mode</item>
 		<item level="0" text="Show menu paths" description="This option allows you to show menu paths.">config.usage.menu_path</item>
+		<item level="0" text="Show menu numbers" description="This option allows you to show menu number quick links.">config.usage.menu_show_numbers</item>
 		<item level="1" text="Zap mode" requires="ZapMode" description="Configure the way in which the receiver changes channels.">config.misc.zapmode</item>
 		<item level="2" text="Channel zap delay mode" description="Setup delay mode to zap to channels.">config.usage.numzaptimeoutmode</item>
 		<item level="2" text="Channel zap delay first button" description="User defined delay when you press the first button to zap to the channel.">config.usage.numzaptimeout1</item>

lib/python/Components/UsageConfig.py

@@ -94,6 +94,7 @@ def alternativeNumberModeChange(configElement):
 		("a_z", _("alphabetical")),
 		("default", _("Default")),
 		("user", _("user defined")),])
+	config.usage.menu_show_numbers = ConfigYesNo(default = False)
 	config.usage.menu_path = ConfigSelection(default = "off", choices = [
 		("off", _("Disabled")),
 		("small", _("Small")),

lib/python/Screens/Menu.py

@@ -268,6 +268,10 @@ def createMenuList(self):
 		else:
 			# Sort by Weight
 			self.list.sort(key=lambda x: int(x[3]))
+
+		if config.usage.menu_show_numbers.value:
+			self.list = [(str(x[0] + 1) + " " +x[1][0], x[1][1], x[1][2]) for x in enumerate(self.list)]
+
 		self["menu"].updateList(self.list)
 
 	def keyNumberGlobal(self, number):