@function setModelViewId

calculate and set modelViewId for model view object

@param {function} modelViewConstructor
function setModelViewId (modelViewConstructor) {
    // get clone of model view spec definition
    var modelView = _.clone(modelViewConstructor.modelView)
    // get function def of constructor
    modelView.constructor = modelViewConstructor.toString()
    // get each function def and meta if set
    if (typeof modelView.each === 'function') {
        modelView.each = {
            function: modelView.each.toString(),
            meta: modelView.each.meta,
        }
    }
    // get post function def and meta if set
    if (typeof modelView.post === 'function') {
        modelView.post = {
            function: modelView.post.toString(),
            meta: modelView.post.meta,
        }
    }
    // get pre function def and meta if set
    if (typeof modelView.pre === 'function') {
        modelView.pre = {
            function: modelView.pre.toString(),
            meta: modelView.pre.meta,
        }
    }
    // set id on model view
    modelViewConstructor.modelView.modelViewId = stableId(modelView)
}