Render actions on each individual row

We use VBO as the default method to provide user-friendly admin interfaces.

Multiple times we were asked if it might be possible to render the action-buttons on every row.
Yes, this means that 'bulk-operation' becomes 'single-operation'.
Unless there are lots of possible operations this clears up the interface and makes it more straight forward what will happen.

Alternatives...

I investigated a lot of alternative options for this type of UI, but there does not seem to be an alternative. We tried:

Page_manager + views-custom field

Custom callbacks: a page_manager endpoint with validation that fires a rules-component, token-replacement in a Views-field to render the link.
This is kinda configurable, but it's a lot of work, needs (too much) extra modules. Also prone for errors.

Custom Views plugins

Custom views-plugins that render the link/button. That again fires a rules-component.
Very difficult to create and therefore hard to maintain when changes are asked.
Most of the custom code is boilerplate and validation.

Proposal

Add option Render operations in Views Field in Bulk operations settings > Display operations as form.
If this option is chosen these options can be dropped or get a default 'single' value:
- Enable 'select all items on all pages' not relevant
- Make the whole row clickable breaks separate button UI
- Force single should default to TRUE
- Number of entities to load at once not relevant
- Skip batching <em>probably</em>not relevant

Tasks

1. Validate that this a good idea.
2. Validate we can do this with the current code-base.
3. Mock user-interface.
4. Code functionality, without touching current implementation (keep BC).