Update backbone.js to 1.1.2.
Update backbone.js to 1.1.2.

Fix backward compatibility of `this.options`.

tomaszdurka/CM,fauvel/CM,cargomedia/CM,cargomedia/CM,zazabe/cm,mariansollmann/CM,vogdb/cm,fauvel/CM,alexispeter/CM,vogdb/cm,njam/CM,mariansollmann/CM,fvovan/CM,vogdb/cm,tomaszdurka/CM,tomaszdurka/CM,njam/CM,zazabe/cm,vogdb/cm,njam/CM,alexispeter/CM,zazabe/cm,cargomedia/CM,fvovan/CM,alexispeter/CM,mariansollmann/CM,vogdb/cm,tomaszdurka/CM,njam/CM,cargomedia/CM,njam/CM,tomaszdurka/CM,fauvel/CM,fauvel/CM,fvovan/CM,fauvel/CM,mariansollmann/CM,fvovan/CM,zazabe/cm,alexispeter/CM