Change notification about updated userscripts and filters

[artemiv4nov]

Application checks updates for filters, application and userscripts. If filters or userscripts have been updated, application shows Toast for every action.

Need to combine two toast into one entity (dialog, toast, activity).

[ameshkov]

This should be a new activity with a list of items being checked:

• Content blocking filters
• DNS filters
• Extensions
• Application update

Each item should have its own status and progress.
Once the update is finished, we should be able to inspect the details (what exactly was updated)

[admitrevskiy]

Done.

Testing instructions for QA:
-Reinstall AG
-Tap on Update icon on Main screen
-Examine new Updates screen:

• If Module is disabled tap on item should lead to Module screen
• If something was updated tap on item should show updates listing
• If nothing was updated you'll see Up to date message
• If App update is available tap on App item will open Release notes. To start app update tap on Update application or download icon at the right side if App item

[BlazDT]

Please add an option to not show the new update screen, some users like I do not want to know what was updated, just that something was updated.