Added support for popover-html directive for binding html

Modified tooltip to support new popoverHtml

Readded forgotten fix to prefix for popover-html

Switched to correct unsafe html binding directive

Refactored and added a flag that can be passed as an optional fourth value in $tooltip for unsafe html binding

Fix spec

Returned template setting to original location

Removed extra whitespace

Condensed test to one meaningful test of rendering properly

Changed the test

Fix up test