Merge pull request #19 from WimpyAnalytics/staticfilefix

Merged in pull request to allow dynamic static files for use with static files both locally and with remote storage.
Added backward compatibility for the previous staticfiles commit
Tidied up the last staticfiles commit
Removed border on default CSS preview to make it prettier
Moved the rendering of the pagedown widget to a separate template. Added ability to globally and 'per-field' enabling or disabling of the markdown preview
Added the ability to globaly and locally change the template used for rendering the pagedown widget
Moved the staticfiles finder into utils
Minor readme change
Added ability to overwrite which CSS file is used by default
Added the ability to customise the CSS for the widgets
Bumped version and changes
Readme update
Update README.md
Minor readme changes
Changed how the template is rendered for proper safe strings
Updated the readme
Added django admin inline support
Added better support for inlines
Update pagedown.js
Update README.md