The upload date was being updated regardless if the new one had more
precision or not, this caused items on the feed to jump around when the
user opened one of them.
This changes it to only update when the existent upload date is null or
the new one has a higher precision (i.e. is not an approximation).
Now only the subscriptions from the selected group by the user will be
loaded.
Also add an option to decide how much time have to pass since the last
refresh before the subscription is deemed as not up to date. This helps
when a subscription appear in multiple groups, since updating in one
will not require to be fetched again in the others.
-Merged stream record manager into history record manager.
-Removed subject-based history database actions.
-Merged normalized history table into watch history fragment.
-Modified history fragments to use long click for delete actions.
-Refactored DAO operations from search fragment to record manager.
-Added index to search history table on search string.
-Fix baseplayer round repeat not detected by discontinuity.
-Added query to remove stream table orphans.
-Added query for retrieving flattened watch history records.
-Added holder for local playlist stream info items.
-Refactored info item on select listener as on touch gesture.
-Added UI for watch history and most played fragments.
-Added stream state table for storing playback timestamp and future usage.
-Enabled playlist deletion.