Merge pull request #914 from bradurani/bu/query_cleanup

Eliminate unnecessary queries and query clauses with none and all

app/models/status.rb

@@ -161,9 +161,9 @@ class Status < ApplicationRecord
       return where.not(visibility: [:private, :direct]) if account.nil?
 
       if target_account.blocking?(account) # get rid of blocked peeps
-        where('1 = 0')
+        none
       elsif account.id == target_account.id # author can see own stuff
-        where('1 = 1')
+        all
       elsif account.following?(target_account) # followers can see followers-only stuff, but also things they are mentioned in
         joins('LEFT OUTER JOIN mentions ON statuses.id = mentions.status_id AND mentions.account_id = ' + account.id.to_s)
           .where('statuses.visibility != ? OR mentions.id IS NOT NULL', Status.visibilities[:direct])