Add revisions button to page list

[jaroel]

This skips editing the page to get to the revisions.

[SalahAdDin]

👍

[alexgleason]

Hi @jaroel, thank you for the contribution! Could you please provide a screenshot? Thanks. 😄

[jaroel]

It's the last button called 'Revisies'

[gasman]

Hi @jaroel,

This pull request needs to be recreated against master, rather than the stable/1.4.x branch - 1.4.x is only receiving bug fixes from now on, and the button code has changed in 1.5 / master (#1940).

We've previously considered and rejected the idea of having 'revisions' in the explorer actions, in #640 - the list of buttons was too long already, and 'revisions' doesn't really work as an action verb in the same way as 'edit', 'move', 'delete' etc (see #640 (comment)). I think those concerns still stand (although at least in 1.5 the 'More...' dropdown means the length of the list isn't as much of a problem) - but I'll leave this open for discussion in case other devs have different thoughts.

[davecranwell]

I think the "More..." dropdown resolves the concerns I had on #640.

As things stand, with the limited space available for buttons its important to ensure only the most important buttons are given priority. The more buttons you add, the more they jostle for attention. Revisions would not be considered a priority button in that context and to my mind would be a distraction.

However with a "More" dropdown, the problem of distraction is solved. Thus the problem of consistent messages ("verbs") is also less pronounced since it takes less time to mentally process the UI if fewer buttons are visible in the first place. I would however expect Revisions to be a "More" action, certainly not a primary one, for the reasons I've stated before (switching a revision is an action tightly coupled with editing the page, so is best done from the vantage point of the page editor.)

I might suggest this is merged only after the More button is.

[gasman]

The More button is already in master, so it sounds like this is PR ready to be re-applied on master too.

[jaroel]

I'll make a new PR on master and place it under 'More'.