Allow block title to be autoselected for quicker editing

[Robert Lyon]

Similar to how the 'add page' page title is auto selected to make it easier to update from 'untitled'

It would be good to have the title field of block config to be autoselected too - so it is easier to update 'Placeholder' to another title when we add the block or select a new block type.

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/11503

[Robert Lyon (robertl-9)]

Turns out I didn't correctly set up how the page does it. It can be a setting on the field's element.

So have updated the code for that too.

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11503
Committed: https://git.mahara.org/mahara/mahara/commit/b314a3fe2e8520c73dc1476e171d6d07def040de
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit b314a3fe2e8520c73dc1476e171d6d07def040de
Author: Robert Lyon <email address hidden>
Date: Fri Dec 18 15:56:11 2020 +1300

Bug 1908628: Allow block configure title to be autoselected

So we can change it quicker

Also fixing up how the view does it now that I understand how it's
suppose to be done

Change-Id: I38b2ebf2fe2cb7060833eb7c771eb82380e5a23a
Signed-off-by: Robert Lyon <email address hidden>