Class function updates & cron job testing works

Added
---------
get_tag_start_position_with_attribute_name_and_value()
tag_has_attribute()

Removed
-------------
get_tag_start_position_with_class()
get_tag_start_position_with_id()
tag_has_class()
tag_has_id()

Cron Job Testing
----------------------
/cron/test.php