Added Configuration Fragment. Now you can send configuration requests to
a device. The response is displayed via Toast.
Added filter button.
when you click this button, you can configure the device filtering by
adding new filter, or remove old ones (by clicking on them in the list)

Also updated the devscan.jar
Added search view to the action bar.
You can enter a search string, so only devices with Name, UUID, or Type
containing this string are displayed (but still captured and stored).
This is only a display filter.
The filters set up under "Filters..." are capture filters.
Removed an unused file.
Formatted source codes.
Removed class files.
Don't sync devscan.jar. So I added the file as a library