Switching back to UltiSnips.

Having recently come to the realizaiton that python should be installed
on every computer I work with, I have decided to give UltiSnips a second
chance.

This patch will integrate ultisnips into this repository (retaining
honza's snipnate-nsippets for reference).
Correct JSON Filetype Handling.

Include bundle to treat JSON files as JSON.
Remove Confluence Wiki syntax support.

Confluence recently dropped wiki syntax from it's editor.