Removes the player functions from the rootScope.

However, saving track's position is broken.
Some are still there because of problems I don't know how to solve, e.g. circular dependency between notifications and player.
Uses the queue controller for the sidebar queue.
Moves loadTrackPosition to the main controller.

app/common/main-controller_test.js

@@ -0,0 +1,30 @@
+describe("Main controller", function() {
+    'use strict';
+
+    describe("updateFavorite -", function() {
+
+        it("when starring a song, it notifies the user that the star was saved", function() {
+
+        });
+
+        it("when starring an album, it notifies the user that the star was saved", function() {
+
+        });
+
+        it("when starring an artist, it notifies the user that the star was saved", function() {
+
+        });
+
+        it("given that the Subsonic server returns an error, when starring something, it notifies the user with the error message", function() {
+            //TODO: move to higher level
+        });
+
+        it("given that the Subsonic server is unreachable, when starring something, it notifies the user with the HTTP error code", function() {
+            //TODO: move to higher level
+        });
+    });
+
+    describe("toggleSetting -", function() {
+
+    });
+});