FACES-1714

 Develop Liferay Faces Showcase (Fixed package names in `i18n.properties`. Replaced `<pre>` tags with `<showcase:outputModel>` composite components to ensure that model output is formatted correctly. Removed `<showcase:outputModel>` tags from example code. Fixed datePicker Multiple Selection bug by changing the dateSeperator from `", "` to `" | "`. Moved dateSeperator to first example.)