DolphinQt: link to Core, resource system

Screenshot of what it looks like now:

![snapshot1](https://cloud.githubusercontent.com/assets/2175324/4690126/cd70fa1e-56da-11e4-8acd-dd81d8c355d7.png)

That clash should be fine; it's only in the constructor. The call could not be any more meaningful than the value itself.