[elm] And here comes image, icon and photo on the

[elm] And here comes image, icon and photo on the
 new schema.
els_icon smart object was brought to be the base of the image widget,
in the form of an image class.

An elm icon is now a elm image, with a little more on top of it.

An elm photo is a now base widget aggregating an icon.

Toolbar's internal usage of the former els_icon is now changed to
icons, instead.

Some naviframe instantiations were set to enable events during
transitions, because this code is buggy and my chages exposed the
problem. It will be fixed as soon as I get to port Naviframe.

SVN revision: 71429