Move page #post helper to encapsulate image references

Ref #143
- Fixes header images for static pages
Merge pull request #147 from novaugust/page-fix

Move page #post helper to encapsulate image references
Version bump to 1.1.2
support for pastebin
Merge pull request #149 from conradkleinespel/master

Support for Pastebin embeds
Version bump to 1.1.3
Resolved conflict