New OS: Schleifenbauer, entity-physical improvements, various html page fixes (#9471)

* Fix some comment and documentation typos.

* Fix various entphysical page display issues.

- Resolve flickering during loading (missing liClosed for nested items).
- Clicking a sensor actually takes you to the matching graph now.

* Add a few nicecase() calls to clean up html page display.

* Create discover_entity_physical() function

- Add discover_entity_physical() function into includes/discovery/functions.inc.php
- This allows for an easy implementation of OS-specific entity-physical discovery.
- Update includes/discovery/entity-physical/entity-physical.inc.php to use the new function.

* Add power_consumed and power_factor sensors.

* Two new icons, make more entPhysical data visible.

* Pre-commit fix: blank line found at end of control structure.

* Add Schleifenbauer OS support.

* Now really fix the comment typo.

* Fix parsing mistakes.

* Add a generic count sensor.

* Make the Schleifenbauer discovery use count instead of state sensors.

* Don't place count sensor at the top, add sane limits for Schleifenbauer

* Finetuning the rrd_options, changing Schleifenbauer sensor names.

* Update schleifenbauer.svg

* optimize logo too

* add test data

* fix sensor value display (spaces break it)

* update entPhysicalIndex

LibreNMS/Util/StringHelpers.php

@@ -76,6 +76,6 @@ class StringHelpers
             'zfs' => 'ZFS',
         ];
 
-        return isset($replacements[$string]) ? $replacements[$string] : ucfirst($string);
+        return isset($replacements[$string]) ? $replacements[$string] : ucwords(str_replace(['_', '-'], ' ', $string));
     }
 }