Forgotten. Follow-up of #2191

#2201
#2191

* Apache performance
API: Use SetEnvIf if available and fallback to RewriteRule
Docker: Disable unused modules.
Docker: Hard-include .htaccess to avoid having to scan for changes in
that file.
Docker: Disable security check of symlinks, which we do not use ayway.

* Apache readme

* Docker/Apache tuning
Run cron job with correct www-data user instead of root
Remove PHP GMP module uneeded for 64-bit Docker image
Add option to mount custom .htaccess for HTTP authentication
Re-add Apache module for HTTP authentication
Move Alpine-specific instructions to Docker file (instead of Apache
conf) to make it easier to have other base images than Alpine

* Security fixes when HTTP user does not exist in FreshRSS
* Accept HTTP header X-WebAuth-User for delegated HTTP Authentication (e.g. Træfik)
* Document delegated HTTP authentication from #2202

* Automatic API test

Easier for end-user, smarter, and the guess testing of greader
authorization token was not reliable.

* Travis + minor

* Use openlog before syslog
In order to have a copy on stderr when syslog is not available.

* Take advantage of syslog for actualization
Pipe cron job STDERR and syslog to Docker log
Cf. 00bd467

#2208

* GMP is needed because Alpine on e.g. ARM runs 32-bit
#2202
* Remove documentation for Træfik HTTP authentication as it is not
compatible with API
#2204

#2208
#2207

Update of #2208
Fixes #2212

https://bugzilla.mozilla.org/show_bug.cgi?id=1514498

#2153

* Export labels

#2196

* Small fixes

* Backport code from 1.14.0

4888f91

* More fixes

#2153
#2218
#2196
#2217

#2209

* Add a JavaScript event when opening an article
https://framagit.org/nicofrand/xextension-threepanesview/issues/4

```javascript
document.body.addEventListener('freshrss:openArticle', function (e) {
		console.log('freshrss:openArticle');
		console.log(e.target);
	});
```

All labelled articles were wrongly marked as starred.

* Import FeedBin

#2227
And more tolerant import

* Mute import fake feed + Changelog

* strtotime for published dates in string

* Update gen.php

* Participe présent harmonisé

* Time format

* Update gen.php

#2230