File actions now always appear in dropdown form

[PVince81]

Description

Removed the inline file action buttons, they are now always available
under the three dots button.

Related Issue

Fixes https://github.com/owncloud/enterprise/issues/3740

Motivation and Context

How Has This Been Tested?

Manual test in regular and responsive mode: the three dots button still works.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• changelog

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[PVince81]

Fixed the test failures and squashed, the way to detect disabled actions in the dropdown is different: in the dropdown the action is simply not present instead of being a disabled button.

[kulmann]

Nice! Just one minor CR regarding tests.

The impression of the table column header ("Actions") is somewhat funny now, since there is only one action visible in the table (of course more when clicking it). Only change I can think of is, to relabel it to "More" / "Mehr"... maybe ask PM about it 🤔

[PVince81]

@kulmann thanks for the review. I changed the label to "More" and added a small margin to add some distance with the scrollbar.
Also added the class.

[PVince81]

regression: #2998