Continuation of freshen mode

[Spuds]

Continuation of going through the controllers to "freshen" the php level in a few areas.

use static on closures that don't need $this
arrow functions fn() => for some one line closures
replace those \ElkArte\AdminController\XYZ calls with an import and XYZ::class
some hardening
useless else removal
early returns
remove list()
cast ints in some of the queries
positive logic in some if

[codecov[bot]]

Codecov Report

Attention: 287 lines in your changes are missing coverage. Please review.

Comparison is base (5659aa4) 33.99% compared to head (c1eba29) 34.39%. Report is 1 commits behind head on development.

Files	Patch %	Lines
sources/ElkArte/Database/Mysqli/Query.php	2.04%	96 Missing :warning:
...rces/ElkArte/Graphics/Manipulators/ImageMagick.php	42.22%	26 Missing :warning:
sources/ElkArte/Database/Postgresql/Table.php	20.00%	20 Missing :warning:
sources/ElkArte/Database/Mysqli/Dump.php	6.66%	14 Missing :warning:
sources/ElkArte/Database/AbstractQuery.php	67.56%	12 Missing :warning:
sources/ElkArte/Errors/Log.php	0.00%	11 Missing :warning:
sources/ElkArte/Graphics/Manipulators/Gd2.php	0.00%	11 Missing :warning:
sources/ElkArte/Errors/ErrorContext.php	54.54%	10 Missing :warning:
sources/ElkArte/Graphics/Image.php	40.00%	9 Missing :warning:
sources/ElkArte/Converters/Html2BBC.php	38.46%	8 Missing :warning:
... and 18 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## development #3757 +/- ## ================================================= + Coverage 33.99% 34.39% +0.39% + Complexity 16582 16571 -11 ================================================= Files 436 436 Lines 84028 84007 -21 ================================================= + Hits 28566 28892 +326 + Misses 55462 55115 -347 ```

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