Added WindowGroomer animation template

WindowGroomer title and animation are in place. Animations made
using the Sublime Text anim_encoder and placed as a featurette
image. The animation only scales correctly when using the canvas
element but not the fallback.
Fixed animation in browsers without <canvas>

Changed size of fallback <div> to a static 512x384. Theoretically,
this will break responsive resizing on browsers without <canvas>,
but this combination does not exist - all browsers that support
responsive resizing via CSS @media also support <canvas>.
Don't enlarge animations
Implemented the text under the animation

Changed set_animation to accept a text_timeline, which is actually
an array of strings, and a text_id, which is the id of the element
where the text should be placed. To support text, frames in
timeline objects should have a text variable indicating the line
of text in text_timeline to use.

The WindowGroomer animation conforms to this format.
Smooth scrolling on anchor links
Finalized WindowGroomer description and links
Add description and links for Mumei

Adjusted vertical center for featurettes. Implemented Mumei's
animations as an animated GIF because subl_animate does not support
multiple animations on the same page, and because the Mumei uses
very few colors to begin with. Added a .btn-team CSS class as a
red button for links to contributors.
Add a header above the projects

Resolve an issue where users assumed the projects section contained
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