Adds missing (
Renames RoundController -> RoundIndexController
Transfers user#show template into emblem

[#40]
Adds ember routes for user show path

[#40]
Adds a simple users#show endpoint

[#40]
Links from the friend index path

[#40]
Stays a lil more consistent with link phrasing / location
Adds a jointRound model
Adds a jointRound table