Fix spam detection and comment moderation status

Giving some initial data to the spam filter makes it work from the beginning. classifier-reborn was used instead of classifier to fix "Gem Load Error is: method `/' not defined in Integer" that occured on one test server

Gemfile

@@ -5,7 +5,7 @@ gem 'oga'
 gem 'puma'
 gem 'sqlite3'
 gem 'pony'
-gem 'classifier'
+gem 'classifier-reborn'
 gem 'kramdown'
 gem 'http'
 gem 'thread'

comment.rb

@@ -1,4 +1,4 @@
-require 'classifier'
+require 'classifier-reborn'
 require 'pony'
 require 'kramdown'
 require 'htmlentities'
@@ -47,7 +47,7 @@ def initialize(*args)
                 self.author = commentAuthor
                 self.id = params[:id]
                 self.status = "approved"
-                self.status = "moderate" if self.isSpam? || self.entry.moderate == "moderate"
+                self.status = "moderate" if self.isSpam? || self.entry.moderate == "moderated"
                 self.subscribe = 1 if params[:subscribe] != nil
                 self.type = params[:type]
                 if self.type == "trackback"
@@ -125,7 +125,10 @@ def train(category)
             db = Database.new
             bayes = db.getOption("spamFilter")
             if bayes == nil
-                bayes = Classifier::Bayes.new "Spam", "Ham"
+                bayes = ClassifierReborn::Bayes.new "Spam", "Ham"
+                # we add some minimal initial training data, because if there is none in one of the categories it always returns "ham"
+                bayes.train "spam", "casino gold viagra"
+                bayes.train "ham", "a valid comment"
             else
                 bayes = YAML.load(bayes)
             end

entry.rb

@@ -13,7 +13,7 @@ class Entry
         attr_accessor :title
         attr_accessor :date
         attr_accessor :author
-        attr_accessor :moderate
+        attr_accessor :moderate   # 'open', 'moderated', 'closed' 
         attr_accessor :tags
 
         def initialize(*args)