add a line between two options for better UI

there is no line between the option to show/hide featured articles and the amount of articles to show in this module.
Without the line people (read: me) can read it as: How many featured articles can be shown. Therefor I was looking for the field to set the amount of other articles I can show. 

With the line between the option show/hide featured articles and the field amount people (read: me) have better understanding of the meaning of amount.
commit change: swapping fields instead of a separator line.
removing obsolete separator line

as mentioned by @Smanzi in Pull Request https://github.com/joomla/joomla-cms/pull/5199 there are two separator lines right after each other. (https://cloud.githubusercontent.com/assets/4165717/5205697/c6c40ebc-7599-11e4-99ec-6150c632c358.PNG)
One of them is obsolete. This pull request removes the second separator line.
Copy Template uses wrong name to replace in the manifest file.
Removed extra wrapping array.
Merge pull request #5220 from amazeika/staging

Removed extra wrapping array on model configuration array
Merge pull request #5199 from hans2103/patch-4

swap two options for better UI
Merge pull request #5219 from Bakual/FixCopyTemplateName

Copy Template uses wrong name to replace in the manifest file.
[imp] Routing: using the dependency injected $app and $menu in the core routers. Fixes #5168

Changing default parameter from constructor from false to null