Converts feed view to drilldown pattern

Before:
http://monosnap.com/file/truCJA1LwkhaqXTllBdkN2zBiPDdQA

After:
http://monosnap.com/file/cxtv9T5AKN7re2LPrN8FllDfqDMm27
I haven’t put the effort into consolidating them yet.

I’ll do that before merging this.