1) Fix issue with not gating delete highlight/tag UI properly
2) Ensure toggle on of highlight initially also injects elements into page
3) Fix user-tagged subtitle showing up when empty
4) Ensure add highlight button doesn't pop up on text in textareas, inputs, and editable divs
5) Consolidate tooltip helpers into addTooltip and removeTooltip functions
1) Fix issue with not gating delete highlight/tag UI properly 2) Ensure toggle on of highlight initially also injects elements into page 3) Fix user-tagged subtitle showing up when empty 4) Ensure add highlight button doesn't pop up on text in textareas, inputs, and editable divs 5) Consolidate tooltip helpers into addTooltip and removeTooltip functions