Changed .mo files from text to binary

Kudos to @ADmad
https://github.com/cakephp/cakephp/commit/ab2edbe4ddd78ad6fc9b9887d3a6c5d0259829e3#commitcomment-4555720

.gitattributes

@@ -9,7 +9,6 @@
 *.ctp text
 *.sql text
 *.md text
-*.mo text
 *.po text
 *.js text
 *.css text
@@ -30,4 +29,5 @@
 *.png binary
 *.jpg binary
 *.gif binary
-*.ico binary
+*.ico binary
+*.mo binary