Replaced submodules URLs with read only ones

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "lib/assets/javascripts/cdb"]
 	path = lib/assets/javascripts/cdb
-	url = git@github.com:CartoDB/cartodb.js.git
+	url = git://github.com/CartoDB/cartodb.js.git
 [submodule "app/assets/stylesheets/common"]
 	path = app/assets/stylesheets/common
-	url = git@github.com:CartoDB/cartodb.css.git
+	url = git://github.com/CartoDB/cartodb.css.git

NEWS.md

@@ -11,6 +11,7 @@ bundle exec rake cartodb:db:load_functions
 * Fixes a importer bug when decoding content-disposition http header
 * Fixes a bug that causes VACUUM FULL to be run more than once after table creation
 * Added 'loading state' for infowindows.
+* Replaced submodule URL's with read-only ones
 
 2.0.3 (31/01/13)
 -----