New ML support

lang_en.txt, lang_en_cz - added MSG_LANGUAGE_NAME

lang/lang_en.txt

@@ -217,6 +217,9 @@
 #MSG_SELFTEST_ENDSTOPS c=0 r=0
 "Endstops"
 
+#MSG_LANGUAGE_NAME c=0 r=0
+"English"
+
 #MSG_Enqueing c=0 r=0
 "enqueing \x22"
 

lang/lang_en_cz.txt

@@ -290,6 +290,10 @@
 "Endstops"
 "Endstops"
 
+#MSG_LANGUAGE_NAME c=0 r=0
+"English"
+"Cestina"
+
 #MSG_Enqueing c=0 r=0
 "enqueing \x22"
 "enqueing \x22"