Improving the navigation by moving it all to a service, adding a generic icon

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

@@ -0,0 +1,16 @@
+describe 'Navigation service', ->
+  Navigation = null
+  
+  beforeEach ->
+    module 'Darkswarm'
+    inject ($injector)->
+      Navigation = $injector.get("Navigation")
+
+  it "caches the path provided", ->
+    Navigation.navigate "/foo"
+    expect(Navigation.path).toEqual "/foo"
+
+  it "defaults to the first path in the list", ->
+    Navigation.paths = ["/test", "/bar"]
+    Navigation.navigate()
+    expect(Navigation.path).toEqual "/test"