Interaction and localization updates

- Allow click through yellow info bar:

![dx-local-pointer-events](https://cloud.githubusercontent.com/assets/1214387/4621916/bebf55be-5343-11e4-8bcb-7237be81691c.png)

- Allow localization and init support for german language:

![dx-local-german](https://cloud.githubusercontent.com/assets/1214387/4621964/ce08501c-5333-11e4-85b7-d6d0f40a4bcd.png)

- Allow custom development environments via filter:

`add_filter( 'dx_localhost', 'custom_dx_localhost' );`
`function custom_dx_localhost() {`
`  $local = array( 'local.dev' );`
`  return $local;`
`}`