workbench 8.x-1.0-alpha3

Minor cleanup release.

• Issue #2858416: Default profile image broken by xiwar: Remove default image from view.
• Issue #2830487: code clean up as per coding standard by harsha012: code clean up as per coding standard
• Issue #2738965: Update Extend page descriptions by dbt102: Update Extend page descriptions
• Issue #2856536: "Workbench" toolbar menu not handled based on user role permission. by aczietlow, Anishnirmal: "Workbench" toolbar menu not handled based on user role permission
• Issue #2832963: Can't use VBO views on the My Workbench page by pingers: Can't use VBO views on the My Workbench page
• Issue #2821245: Use toolbar tray instead of local task tabs by becw: Use toolbar tray instead of local task tabs
• Issue #2758543: Remove @file tag docblock from all the .php files. by Vinay15: Remove @file tag docblock from all the .php files