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