Added baseview(extended from backbone view), which can further extended ...

...by other views

STUD-823
@adampalay
@cahrens

Steps for making baseview afterRender function to work:
1). Extend view from BaseView 
2) Add line below in initialize function of view to call initialize function of baseview:
```JavaScript
ViewName.__super__.initialize.apply(this, arguments);
```

Sample for extending other views from this baseview:

```JavaScript
define(["backbone", "underscore", "js/baseview"],
    function(Backbone, _, BaseView) {

    var AbcView = BaseView.extend({
        events: {
            "click .save-button" : "onSave",
        },

        initialize: function() {
            AbcView.__super__.initialize.apply(this, arguments);

            this.template = _.template($("#abc_template").text());
            var self = this;
            self.render();
        },
    )};
    return AbcView;
)};
```