Refine modal dialogue layout.

Removed some class naming conflicts with Bootstrap.
More efficient use of vertical space.
There are no longer vast swaths of empty horizontal space.
Textareas automatically resize with viewport.
Textareas are now vertically user resizable.
Make upload dialogue consistent with other modals.

More consistent appearance with ObjectEditor.
Save button in iframe is now hidden. Upload button on dialogue triggers it.
Actually fill existing text from object descriptions in the object editor
Refresh master from modernization work