GUI-361: Hide Name tag from tag editor on instance, volume, and snapshot detail pages

Implements remaining item for https://eucalyptus.atlassian.net/browse/GUI-361

Notes:
- The tag editor panel now accepts a "show_name_tag" param to allow selective display of the Name tag on a page-by-page basis.  
- The Name tag is hidden on the instance, volume, and snapshot detail pages, since those pages now allow editing of the Name tag via a form field.  
- If the Name tag is hidden and the resource has a Name in the input field, the "You may not add more than ten tags to a resource" message is appended with an additional note to prevent confusion when only 9 tags are displayed in the tag editor area.