Ability to Hide WYSIWYG Toolbar

[blueprint]

It would be nice - for space-saving reasons - to be able to hide the WYSIWYG formatting toolbar.

Setting the `toolbar` param to `null` doesn't have an effect:

this.createField('description', 'views/fields/wysiwyg', {mode: this.mode === 'edit' ? 'edit' : 'list'}, {rows: 3, toolbar: null});

However, adding a `hideToolbar` param would allow this to happen:

client/src/views/fields/wysiwyg.js

setup: function () {
    Dep.prototype.setup.call(this);
    this.hasBodyPlainField = !!~this.getFieldManager().getEntityTypeFieldList(this.model.entityType).indexOf(this.name + 'Plain');
    if ('height' in this.params) {
        this.height = this.params.height;
    }
    if ('minHeight' in this.params) {
        this.minHeight = this.params.minHeight;
    }
    this.useIframe = this.params.useIframe || this.useIframe;
    this.toolbar = this.params.toolbar || [
        ['style', ['style']],
        ['style', ['bold', 'italic', 'underline', 'clear']],
        ['fontsize', ['fontsize']],
        ['color', ['color']],
        ['para', ['ul', 'ol', 'paragraph']],
        ['height', ['height']],
        ['table', ['table', 'link', 'picture', 'hr']],
        ['misc',['codeview', 'fullscreen']]
    ];

    // Check for the hideToolbar param so we can completely disable the toolbar
    if (this.params.hideToolbar) {
        this.toolbar = null;
    }

    ...
}

And thus can be used as follows:

this.createField('description', 'views/fields/wysiwyg', {mode: this.mode === 'edit' ? 'edit' : 'list'}, {rows: 3, hideToolbar: true});

[esforim]

Pull request when?

But these this still have the option to "show" toolbar upon clicking a button or Hotkey? Or is it a permanent disappearing solution.