Added new spam_flag to Accounts, replacing is_flagged_as_spam

• Added:
- new spam_flag to Accounts, replacing is_flagged_as_spam
- null/0: no spam, 1: spam, 2: safe from spam

• Updated:
- Comment, Status to reflect changes

• Todo:
- Fully remove is_flagged_as_spam
- Update SortingQueryBuilder

db/migrate/20210218235403_add_spam_flag_to_accounts.rb

@@ -0,0 +1,5 @@
+class AddSpamFlagToAccounts < ActiveRecord::Migration[6.0]
+  def change
+  	add_column :accounts, :spam_flag, :integer, null: true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_02_16_022902) do
+ActiveRecord::Schema.define(version: 2021_02_18_235403) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "mongo_fdw"
@@ -143,6 +143,7 @@ ActiveRecord::Schema.define(version: 2021_02_16_022902) do
     t.boolean "is_donor", default: false, null: false
     t.boolean "is_investor", default: false, null: false
     t.boolean "is_flagged_as_spam", default: false, null: false
+    t.integer "spam_flag"
     t.index "(((setweight(to_tsvector('simple'::regconfig, (display_name)::text), 'A'::\"char\") || setweight(to_tsvector('simple'::regconfig, (username)::text), 'B'::\"char\")) || setweight(to_tsvector('simple'::regconfig, (COALESCE(domain, ''::character varying))::text), 'C'::\"char\")))", name: "search_index", using: :gin
     t.index "lower((username)::text), lower((domain)::text)", name: "index_accounts_on_username_and_domain_lower", unique: true
     t.index ["domain"], name: "index_accounts_on_domain"