BUGFIX: Chinese search was broken

BUGFIX: User locale was used index data
BUGFIX: missing Norwegian fulltext config
FEATURE: store the text used to index stuff in fulltext (for diagnostics / in page search)
FEATURE: re-index posts when locale changes (in bg job)
FEATURE: allow reindexing by trucating post_search_data

Note: I removed japanese specific config cause it requires custom pg config,
  happy to add it once our base docker config ships with it

lib/sql_builder.rb

@@ -77,6 +77,10 @@ class SqlBuilder
     16 => :value_to_boolean
   }
 
+  def self.map_exec(klass, sql, args = {})
+    self.new(sql).map_exec(klass, args)
+  end
+
   def map_exec(klass = OpenStruct, args = {})
     results = exec(args)