Display video groups of one item as regular video

Description

Currently, with video grouping by name, playback starts directly if the group contains only one item. But this group is still displayed as a group (so no duration/position/size info on the card), and context action on videos are not available (such as delete, share, ...).

This patch will display groups of one item as a real video item, with the video card and proper context actions.

Motivation and Context

UI improvement

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (non-breaking change which cleans up / improves existing functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the CONTRIBUTING section of the README document.