Changed .mo files from text to binary

Kudos to @ADmad
https://github.com/cakephp/cakephp/commit/ab2edbe4ddd78ad6fc9b9887d3a6c5d0259829e3#commitcomment-4555720
Merge pull request #2318 from ravage84/mo-files

Changed .mo files from text to binary
Remove non-portable data type from MySQL.

'numeric' is a non-portable type that is not supported by any other
database driver. Removing it now will prevent future problems.
Merge upstream/2.5 into 2.5
remove `numeric` from `unsigned` config
add `unsigned` property in `Model::describe`