Further enhancements for treeview

[jrchudy]

Contents of this issue taken from this comment in an older issue

• expand/collapse buttons should be moved to next line if content is "skinny"
• more details hover pop-up in treeview before navigating to record app
  • what content should be in here (look at legacy)
• cacheing of treeview when RT is collapsed in record app
• performance of loading treeview (either fetching data and/or loading the html and app)
• cacheing of JSON data
• treeview has a cid defined and has a navbar. But it doesn’t use angular so there is no config app defined and therefore pcid=navbar will show up in the logs for links clicked in treeview
  • from another older issue