Support controllers defined in storyboard

[Doc1faux]

Currently, controllers defined in storyboard are not configured as in cobalt.conf and no page is loaded.
Investigate and enhance Cobalt to support controllers defined in storyboard.

[Doc1faux]

For controllers defined in storyboard to work, override its initWithCoder: method as below:

- (id)initWithCoder:(NSCoder *)aDecoder {
    if (self = [super initWithCoder:aDecoder]) {
        [self initWithPage:@"myPage.html"
             andController:@"myController"];
    }

    return self;
}