You can not interface a PC usb bluetooth dongle directly to a pic.
This is because they need a USB host controller and no pics currently provide that facility.
There are USB modules available that convert it to a serial interface, such as:
**broken link removed**
You will need to upgrade to a pic with a usart though in order to easily interface serially with a quickblue module.
Eventually you are going to have to give up with trying to use the pic16F84 anyway as you seem to want to make complex projects that would be better suited to more modern pics.