Add describe workbench element definitions
Fix describe workbench search field definitions
Add .select_by_text function to describe workbench
Update describe workbench step

Remove functions for title, author, id, date;
Add edit function;
Require only "(foo)_by_text" functions.
Add describe workbench functions

- select_by_text
- view_by_text
- edit_by_text
- overlay_by_text
- create_instance_by_text
Update changelog