Reorient Encode panel horizontally.

Move the presets list left of the tabs.
Default Encode panel on the left side.

Also, disconnect chaining the Jobs panel visibility to the Encode panel,
and default the Jobs abd and History panels on the right side.
Disable video mode options on encode preset with profile info.

This helps prevent people from changing these to invalid values.
Also, add a Reset button to set encode options to default values and re-