Added/modified indexes for hive_posts and hive_feed_cache to speed up queries

See merge request !452

- supplemented list of indexes to be disabled at massive sync
- supplemented upgrade scripts
- WIP: upgrade still needs to be tested on prod. database

[DLN] added/modified some indexes to increase performance (to hive_posts and hive_feed_cache tables)

Eliminate 7 day vote check "optimization" and always use full vote history to compute latest vote because it can be computed with an index-only scan (when the account hasn't voted in last 7 days, this is about 100x faster compare to the 7 day check and is just as fast even when account has voted very recently). This should dramatically lower the load on hivemind.

Replace in operator by join to optimize some cases, but this will make query slow in other cases until the followup commit where we change the hive_posts_author_id_created_at_idx and hive_posts_parent_id_idx indexes to allow for index-only-scans.

Cleanup in `Mutes` class

See merge request !448

follow notification time fix

See merge request !449

Added hive_notification_cache table supplement (autoincrement definition for id column).

See merge request !447

notification cache use autoincrement id

See merge request !445

Another temp. fix related to ID generation.

See merge request !444

notification id generation fix

See merge request !443

- Fixed bug causing to leave all old reputation data (which shall be truncated)

See merge request !439

Fixes in get_discussions_by_feed

See merge request !438

- After creating indexes ANALYZE statement is called automatically
- db_upgrade performs an VACUUM FULL ANALYZE spawn if needed
- update procedures notify about their execution

Merge branch 'abw_get_discussions_by_feed_fixes' of gitlab.syncad.com:hive/hivemind into abw_get_discussions_by_feed_fixes

[ABW]: fexed validation of author in bridge.get_account_posts/feed and condenser_api.get_discussions_by_feed
also pages no longer overlap in those calls

Optimize bridge_get_account_posts_by_replies by moving "ORDER BY ar.id DESC" out of inner query so that optimizer doesn't think it should do a sequential scan of hive_posts (the LIMIT + ORDER BY seems to have led it astray). Previous code was too slow when the author didn't have any posts that could be replied to.

get account posts by replies perf fix

See merge request !432