Tagging Contacts (assigning/removing categorization)

• Create a new "Tags" tab under View Contact for assigning and/or removing categorization
• Tags page contains simple form consisting of:

• contact display_name
• <h3>Tags (categories) for this contact:</h3>
• a table with a row for each crm_category record, each row consisting of:
  + checkbox
  + crm_category.name

NOTE: Talk to Yash as to whether this should be a shared 'widget' with Advanced Search

• on load, currently assigned category rows are CHECKED
• form buttons: [ Update Tags ] [ Cancel ]
• on Update, category assignments (crm_entity_category records) are inserted and deleted to reflect currently checked rows

• Modify View.tpl to show comma separated list of currently assigned tags (categories). (Replacing the dummy/hard-coded strings that are currently in the template. )