[ABW]: Deleted posts filtered out from hive_posts_view, no longer need filtering everywhere outside (also fixes some places where check on deleted post was missing).
sqlalchemy has problem with passing JSON to query parameter - changed to passing as string (fixes problem of {} where [] should be).

Fixed code that reads beneficiaries from operation
Changed error response from None to proper error in bridge.get_profile and bridge.get_post_header
Empty raw_json in hive_accounts no longer crashes API calls
condenser_api uses sum of payout and pending_payout for correct order by payout
When selecting blog posts with special start_index value (0 or -1) limit is shortened when there is not enough posts (was error which made no sense)
[Ign] changed order in hive_posts_view so all vote related fields are near each other

[ABW]: curator_payout_value/total_payout_value now have '0.000 HBD' default to always have asset in value (ultimately they should be changed to numeric columns)
removed columns that we don't intend to update as they would hold irrelevant data: children_abs_rshares, reward_weight; also removed from queries
hive_posts_view no longer has parent_permlink - replaced with parent_permlink_or_category as that's what was in original comment data and what is expected
fixed order by time in list_comments_by_last_update, list_comments_by_author_last_update (newer first)
fixed payout update date - each operation that is part of payout has its own date as (at least some) can be from different blocks
fixed author_rewards - it is a sum of partial rewards for the comment
when payout operations are processed they no longer incorrectly overwrite each other's data
1969 year in date recognized as timestamp::max and replaced by infinity (and the other way when producing results) - fixes corner case of time ordering in by_cashout_time
commented out checks in run_tests.sh as they fail when address contains '-' like in 'hive-3.pl.syncad.com'

[ABW]: [Fix] removed unused rshares field from hive_posts (it is calculated dynamically in hive_posts_view)
[Fix] more uses for hive_posts_view (needed to make sure all uses of rshares go through view)
[Fix] rshares in hive_posts_view now properly has value 0 when there is no votes
[Fix] there is no such thing as is_invalid in hive_posts (fixed to is_valid)
[Fix] removed some unused class and routines (two whole files and some more)
[Ign] some formatting changes

Temporary patch to parse_amount to avoid whole query failures until cashout will be fixed.

Fixed obvious and not so obvious errors in SQL and python code.

  * added query limit to avoid SQL overflow errors,
  * fixed inefficient insert query, pervious was using selects for each row,
- In apis:
  * subqueries were changed to inner joins

Support for comment_options_operation, percent_steem_dollars renamed to percent_hbd, changed some defaults in schemas, removed percent_steem_dollars column from hive_posts

[WIP] list_commments implmemenation: added native database_api.list_comments, raw_json data moved to proper table columns in hive_posts_cache, engine changed to support new columns. Added script to perform database upgrade.

[WIP] list_commments implmemenation: added native database_api.list_comments, raw_json data moved to proper table columns in hive_posts_cache, engine changed to support new columns. Added script to perform database upgrade.

[WIP] list_commments implmemenation: added native database_api.list_comments, raw_json data moved to proper table columns in hive_posts_cache, engine changed to support new columns. Added script to perform database upgrade.

This reverts commit 0b66dbde

[WIP] list_commments implmemenation: added native database_api.list_comments, raw_json data moved to proper table columns in hive_posts_cache, engine changed to support new columns. Added script to perform database upgrade.