Adding Edl button in reboot menu

Edl mode is available only on qualcomm devices and it used to fully
restore the bricked devices. I made the button available only if
TW_HAS_EDL_MODE := true like the download button. I set the edl
button to the right of the download button, so devices can support
edl button and download button. I also added the translation for
all languages.

Change-Id: I69d1058b8c050b722395c7b3da6dce1ccfbe7a91
diff --git a/twrp.cpp b/twrp.cpp
index 6b9cd75..95e376b 100755
--- a/twrp.cpp
+++ b/twrp.cpp
@@ -345,6 +345,8 @@
 	else if (Reboot_Arg == "download")
+	else if (Reboot_Arg == "edl")
+		TWFunc::tw_reboot(rb_edl);