add mime task to portalmec:setup

lib/tasks/portalmec.rake

@@ -11,6 +11,10 @@ namespace :portalmec do
     Rake::Task['import:topics'].invoke
     Rake::Task['topics:define_defaults'].invoke
 
+    puts "\n Want to identify unknown mime types in learning objects' attachments? [Y/N]"
+    answer = STDIN.gets.chomp
+    Rake::Task['attachments:set_unknown'].invoke if answer =~ /y/i
+
     puts "\n Want to generate thumnails? [Y/N]"
     answer = STDIN.gets.chomp
     Rake::Task['thumbnail:create_missing'].invoke if answer =~ /y/i