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-functions.hpp b/twrp-functions.hpp
index 7847aed..efaa460 100755
--- a/twrp-functions.hpp
+++ b/twrp-functions.hpp
@@ -37,6 +37,7 @@
 	rb_bootloader,     // May also be fastboot
+	rb_edl,
 } RebootCommand;
 enum Archive_Type {