XXX: Add railties dependency

This should a be a rails dependency. But it's not processed.

software/gitrepo/software.cfg

@@ -76,6 +76,7 @@ gems =
   bundler
   rake
   rails
+  railties
 gem-options = --with-icu-lib=${icu:location}/lib/ --with-icu-dir=${icu:location}/
 environment =
   LDFLAGS = -L${icu:location}/lib -Wl,-rpath=${icu:location}/lib