More easy update of JS libraries.

[toirl]

Currently Ringo uses different 3rdparty libraries like Datatables, Jquery, Bootstrap etc.
The libraries are located unter /app/static.
In this folder each library is splittet by its file types and located into css, js subfolder.

The origin idea was to have all JS or CSS files in one folder. In practice this is a bad way and hinders us from updating a library by simply replacing the complete library.

So for the future there is a proposal to seperate the libraties in the following way:

app/static
| boostrap
| – js
| – css
| datatables
| – js
| – css

As further consideration with lower priority we can look into the direction of using something like bower to manage the 3rc party libraries. See this more as reminder to create a new ticket for further improvements when this ticket is done.