A composed finish

Now, we come to the view that allows you to actually send e-mails, a pretty important part of this application!

// app/view/composer/Composer.js
Ext.define('Postcard.view.composer.Composer', {
    extend: 'Ext.form.Panel',
    xtype: 'composer',
    cls: 'composer',
    viewModel: 'composer',
    controller: 'composer',
    session: true,
    items: [
        { xtype: 'hiddenfield', bind: '{newMessage.parentId}' },
        {
            fieldLabel: 'To', xtype: 'combo', width: '100%',
            valueField: 'e-mail',
            displayField: 'e-mail',
            queryMode: 'local',
            bind: {
                hidden: '{newMessage.parentId}',
                store: '{contacts}',
                value: '{newMessage.people}'
            }
        },
        {
            xtype: 'textfield', fieldLabel: 'Subject',
            cls: 'subject', emptyText: 'Subject',
            bind: {
                value: '{newMessage.subject}',
                hidden: '{newMessage...