Rewriting to postgrest P1

Continuation of: !717 (merged)

Postgrest methods added in MR:

condenser_api:get blog, get blog entries, get_content, get_content_replies, get_active_votes, get_following, get_followers

database_api: list_votes, find_votes

follow_api: get_follow_count,get_blog, get_blog_entries, get_reblogged_by

tags_api: get_discussion, get_content_replies

List of finished API methods:

Bridge:

• get_community,
• get_community_context,

Condenser:

• get_account_reputations,
• get_active_votes,
• get_blog,
• get_blog_entries,
• get_content,
• get_content_replies,
• get_follow_count,
• get_followers,
• get_following,
• get_reblogged_by,
• get_state,
• get_trending_tags,

Database:

• find_votes,
• list_votes,

Follow:

• get_account_reputations,
• get_blog,
• get_blog_entries,
• get_follow_count,
• get_followers,
• get_following,
• get_reblogged_by,

Tags:

• get_discussion,
• get_content_replies,