User can subscribe to other user's feeds.
User can publicise or privatise feeds.
Fix if condition to correct type.
Return private feeds if user is browsing their own feeds page.
Merge branch 'colin'
Added Discover Link to Logged In current user nav
hyperlinked RSS Feed Name on index.html.erb to show the feed_items of that feed
added Subscribed Feeds section to nav
fixed merge conflict
Updated Subscriptions Nav section to use subscriptions vs feeds
Fixed Unsubscribe logic for feeds/index.hmtl.erb page
fixing the damned feed.id user.id bugs