Don't overload the word "Properties" to mean multiple things

Summary:
Generally "Properties" refers to information about a selected file. However Dolphin also
uses the word "Properties" in the phrase "View Properties", which refers to the display
style of the view. Since "properties" is a fairly esoteric and technical term to most
users, it would probably be wise to avoid using it in multiple contexts.

Accordingly, this patch changes "view properties" to "view display style".

Test Plan: Look at the settings window, hamburger menu, view menu, and docbook

Reviewers: VDG, Dolphin, ndavis, elvisangelaccio

Reviewed By: VDG, Dolphin, ndavis, elvisangelaccio

Subscribers: ndavis, kfm-devel, kde-doc-english

Tags: Dolphin, Documentation

Differential Revision: https://phabricator.kde.org/D25987