adding unit_price to supported tags

Signed-off-by: Galen Vinter <galen.vinter@gmail.com>
Merge branch 'mypwork' of github.com:Placester/builder into mypwork
Add classes for widget - html and iframe
Merge branch 'mypwork' of github.com:Placester/builder into mypwork
Fix single post/page views when template_redirect is active