Simplify Navigation.go, not preserving hash fragments

I looked through the history and it looks like this function was a bit
flawed (preserving hash fragments) from the beginning. It has been
patched a few times without addressing the underlying issue that we want
more than just replacing the pathname. We want to go somewhere else.

app/assets/javascripts/darkswarm/services/navigation.js.coffee

@@ -21,10 +21,9 @@ Darkswarm.factory 'Navigation', ($location, $window) ->
       $window.location.href = $window.location.origin + path
 
     go: (path)->
-      if path.match /^http/
-        $window.location.href = path
-      else
-        $window.location.pathname = path
+      # The browser treats this like clicking on a link.
+      # It works for absolute paths, relative paths and URLs alike.
+      $window.location.href = path
 
     reload: ->
       $window.location.reload()

spec/javascripts/unit/darkswarm/services/navigation.js.coffee

@@ -3,7 +3,6 @@ describe 'Navigation service', ->
   window =
     location:
       href: null
-      pathname: null
 
   beforeEach ->
     module 'Darkswarm', ($provide) ->
@@ -24,5 +23,4 @@ describe 'Navigation service', ->
 
     it "redirects to paths", ->
       Navigation.go "/woo/yeah"
-      expect(window.location.pathname).toEqual "/woo/yeah"
-    
+      expect(window.location.href).toEqual "/woo/yeah"