ngGrid pagination controls

- Fixing the download dropdown class in app.less so that it doesn't affect bootstrap positioning.
- Removing test div on add new layer (layerInfo).
- Adding pagination controls for ngGrid on layer page.

Note: I'm setting the page size from 25 to 10 temporarily to observe how the paging control functions.
Note: I'm not sure if I should be including the new pagination.js in the core folder and the core.js file, so please let me know.
Question: do we want to include a dropdown for the number of items per page still?

I believe there may be a bug in how the grid items are returned perhaps due to sorting the columns, but I'll have to investigate that further.
Hey Robert, where does file come from? Did you write it? Or take it from ui bootstrap?