Reworking the video section

We're using albums now, so changes related to that.
There's also a parent class which contains most of the information now.
Any child class is free to override as needed.

I think I found the problem

thumb_url was returning nil
Missed a few things
Messed up the check to skip if the video was done
Add helper class for reading google spreadsheets
Merge pull request #49 from pmuir/demos

Demos
Merge pull request #52 from pmuir/DEVELOPER-675

DEVELOPER-675

Reads Google Spreadsheets

Conflicts:
	aweplug.gemspec
Merge pull request #53 from LightGuard/vimeo_change

Vimeo change

Reworking how vimeo videos work. Adding in contributor normalization and
partial rendering.

Conflicts:
	lib/aweplug/helpers/vimeo.rb
Cleanup