Bug Fixes for PopBell

Hello, I have contributed to this application before this patch, now
it's time to fix other bugs.
First, PluginDataReceiver Bug. When we use Database objects, we must
close objects to prevent a bunch of warnings and leaks.
PluginDataReceiver has a helper and a cursor, but these aren't closed. I
fixed this.
Second, Android Keyboard Issue caused by focus. Popup window called
'StandOutWindow' takes away focus from inputbox, and keyboard
disappears. I disabled the code.
PopBell's Persistent Notification(must be started by StandOutWindow
Class) must be shown. PopBell shows "null Running", this is very
annoying. This must be replaced.
Also, at AddnewtoBlacklist activity, View refresh will be executed only
if passable is true. (Logical unnecessary operation)
Merge pull request #3 from charlie1024/master

Bug Fixes for PopBell