Bundle update and passage to versioned webshims

Gemfile.lock

app/assets/javascripts/application.js.coffee

public/webshims/1.15.8/polyfiller.js

public/webshims/1.15.8/shims/FlashCanvas/canvas2png.js

public/webshims/1.15.8/shims/FlashCanvas/flashcanvas.js

public/webshims/1.15.8/shims/FlashCanvas/flashcanvas.swf

public/webshims/1.15.8/shims/FlashCanvasPro/canvas2png.js

...ic/webshims/1.15.8/shims/FlashCanvasPro/flash10canvas.swf

public/webshims/1.15.8/shims/FlashCanvasPro/flash9canvas.swf

public/webshims/1.15.8/shims/FlashCanvasPro/flashcanvas.js

public/webshims/1.15.8/shims/canvas-blob.js

public/webshims/1.15.8/shims/color-picker.js

public/webshims/1.15.8/shims/combos/1.js

public/webshims/1.15.8/shims/combos/10.js

public/webshims/1.15.8/shims/combos/11.js

public/webshims/1.15.8/shims/combos/12.js

public/webshims/1.15.8/shims/combos/13.js

public/webshims/1.15.8/shims/combos/14.js

public/webshims/1.15.8/shims/combos/15.js

public/webshims/1.15.8/shims/combos/16.js