tell developer the right <script> tag to add after integrate

[mykmelez]

If you oghliner integrate app/scripts/, then Oghliner tells you to add <script src="app/scripts/offline-manager.js"></script> to your pages when you should actually add <script src="scripts/offline-manager.js"></script>. It should tell you the right thing to add.

Unfortunately this isn't simple in the general case, since Oghliner doesn't necessarily know the root directory of your source files. I suppose we could add a parameter to specify it, although that's almost as cumbersome as manually adjusting the path afterward.