Make details view mode's full row activation optional
(Video not completely up to date anymore because the wording of the setting was changed as suggested in !467 (comment 544842).)
In d3839617 the details view mode was changed in a way that made the full row of an item the click target instead of only having the item's icon and text be the representative clickable area of an item.
This commit makes this new behaviour optional through a setting which can be changed in Dolphin's settings dialog.
The explanation for introducing yet another setting in this case is as follows:
While the introduced change is an improvement for many typical workflows, there are some workflows for which this new behaviour is problematic. Quite prominently a usage of Dolphin that tries to maximise information density is made worse by the change because now side padding is necessary to click the view's background. While the side padding is and was optional, disabling it made switching the active view in split view mode more difficult among other things. For a more complete discussion about the issues, please check out the bug report(s) and the discussion in #34 (closed).
BUG: 453700 FIXED-IN: 22.12