RollHistortDatabaseAdapter
RollHistortDatabaseAdapter only updates the roll count in
notifyDataSetChanged()
re-added roll thread
added boolean isRolling to prevent multiple rolls at the same time
Change-Id: I47fea7af989d0b2239ad8c5082649022836a2263
Signed-off-by: Ricky Barrette <rickbarrette@gmail.com>