[4.0] Fix debug logging. Move logging to application

[Fedik]

This is try to fix Release Blocker #25675 .

Summary of Changes

This will move logging set up to application level. The plugin used only for display them.
One of new feature here, that the logging may be enabled even when the debugging is Off.

Testing Instructions

Be aware: there a thousands of Deprecated entries, if you have a slow PC / server, be patient.

Apply patch. Go to Global Configuration and enable Debug, also enable Log Deprecated API.
Enable System Debug plugin, and set "Show logs" in the plugin.

In the debugger toolbar you should be able to see much of entries of Deprecated call.

Actual result BEFORE applying this Pull Request

No Deprecated entries, or only few of them.

Expected result AFTER applying this Pull Request

A loot of entries

Documentation Changes Required

Yes I guess. Logging moved to Global configuration, and can be enabled there.

[toivo]

I have tested this item ✅ successfully on 0275ab9

Tested successfully in Beta4-dev of 5 August on Wampserver 3.2.2 using PHP 7.4.8.

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[richard67]

Previous test by @toivo is still valid because last change only was a typo correction in a language string. I've restored the test result in the issue tracker.

[richard67]

I have tested this item ✅ successfully on 31e7e77

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[richard67]

@Fedik To save you time, I've allowed myself to commit the typo correction for the language string directly to your branch. I hope you are ok with that. If not, let me know and I'll never do it again.

[richard67]

RTC

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[ohrionmartin]

I have tested this item ✅ successfully on 31e7e77

System Information

php: Linux lamp121.cloudaccess.net 2.6.32-673.8.1.lve1.4.3.1.el6.x86_64 #1 SMP Thu May 5 16:06:47 EDT 2016 x86_64
dbserver: mysql
dbversion: 5.7.29-cll-lve
dbcollation: utf8_general_ci
dbconnectioncollation: utf8mb4_general_ci
dbconnectionencryption:
dbconnencryptsupported: true
phpversion: 7.3.19
server: Apache
sapi_name: cgi-fcgi
version: Joomla! 4.0.0-beta4-dev Development [ Mañana ] 29-July-2020 18:21 GMT
useragent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0

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[richard67]

@wilsonge Anything keeps this from being merged?