Adds cleaned sprite files.
Copies new card_sprite over old one.
Adjusts cardheight and cardwidth to match new spritesheet.
Merge branch 'blackdecker' of http://www.github.com/mrryanjohnston/Canvas-Fun into blackdecker

Conflicts:
	card_sprite.png
	cards.html
Merge branch 'blackdecker' of http://www.github.com/mrryanjohnston/Canvas-Fun into blackdecker
Merge branch 'blackdecker' of github.com:mrryanjohnston/Canvas-Fun into blackdecker
Merge branch 'blackdecker' of github.com:mrryanjohnston/Canvas-Fun into blackdecker
Adds empty divs to signup form for error placement.
Adds 401 error for when a password or username isn't supplied in login.
Adds a page-specified javascript block.
Adds js block to base view.
Adds ids to signup form inputs.
Adds javascript confirmation indicators of passwords and emails not matching.
Adds a css class for hidden elements.