Renamed the function _robotagger_create_field() to _robotagger_create_topic_field() in the install file

Removed _robotagger_fields_uninstall(). Simlyfied the deletion of our fields. Delete our node type and his nodes.

Added: A field for the topic. Fixed a Bug in hook_uninstall(). Renamed taxonomy_node_get_terms -> _robotagger_taxonomy_node_get_terms.

Added: Enabled supported annotations for the Robotagger-Demo content type; enabled robotagger content type as supported ct; enable translation for the robotagger ct; while install

Added Custom Body Field, automatically creation of field instances, Bug Fixing, Language Compatibility