Fixed file uploads for accessories, components, and consumables

[marcusmoore]

Description

This PR adds the previously missing file upload tab and file upload button on the accessories, components, and consumables show pages for users that have the ability to view and modify files for those respective entities. For non-super-users this means the following permissions have been granted:

• View and Modify Accessory Files
• View and Modify Component Files
• View and Modify Consumable Files

This is accomplished by registering the gates that are already being checked in the templates:

• accessories.files
• components.files
• consumables.files

In addition, minor template changes were made on the accessory show page so the bottom bar is constrained to the content area, and the layout is consistent for users regardless of if they have access to accessory files.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Before and After

Assuming the user has been granted the "View and Modify x Files" mentioned above.

Accessories

Before	After

Components

Before	After

Consumables

Before	After

[what-the-diff]

• Added new permissions for accessories, components and consumables.
• Updated the view files to use these new permissions instead of using update permission on each model class directly.

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉

[snipe]

This PR is gorgeous - thank you!