Presenting state now is done through a buffer collection
The buffer collection is intended to be the accurate state representation for the view, which means that the it will contains only the muppets that fits in the filter.
Buffer is used to keep state of the view in muppets list controller
Removing extra unnecessary markup

Instead of creating #filter > div > #filter-component, #filter >
#filter-component will be created.
poor english…
Removing extra markup and converting #IDs  to .Classes

I think we should be preffer .classes over #ids in other to produce
resuable code (even though now to resuse isnt the case).
Some fixes based on commits on wip branch after forking

- Fixing avatar dimensione causes less rerendering.
- Now, muppet items are anchors, so it act as expected for the user on
right-click.
- A loading sping was added behind the image.
Merge branch 'master' of https://github.com/edygar/puppeteer into edygar-master

Conflicts:
	src/app/entities/muppet.coffee
	src/app/modules/muppets/list/templates/muppet-item.hbs
	src/styles/_muppets-list.scss
Minor code cleanup