[skip ci]

Notice: Use of undefined constant PIWIK_DOCUMENT_ROOT - assumed 'PIWIK_DOCUMENT_ROOT' in plugins/CustomPiwikJs/Commands/UpdateTracker.php

refs #6106

[automatic translation update] Updated 118 strings in 4 languages (cs, it, nb, de)

PHP 7: when there is a fatal error in API request processing, display the original error in the api response (#10406)

* PHP 7: when there is a fatal error in API request processing, display  the original error

* PHP 7 compatibility

* Fix no required Piwik version was defined

* plugins should specify an upper version constraint to the next major version

* Fixes #10399

* add test reproducing issue #10399

* another health check

* Create index.htm files in tmp/ folder as safe net

*  UI test

* silent fail

* fix unit test

* Minor Improvement to description

* Fix release checklist

* Fix release checklist

* UI test

* UI test logic

* Actually make methods public to keep BC

[automatic translation update] Updated 103 strings in 36 languages (fa, fr, sv, tr, ar, cs, da, de, el, es, fi, it, ja, ko, nb, nl, pl, pt-br, ro, ru, sk, sr, tl, uk, zh-cn, be, bg, ca, id, lt, lv, pt, sl, sq, vi, zh-tw)

* Disabled Max Password Length Check

* Disabled Max Password Length Check

* Reset config files

* Translation & other fix

* Fixed Test Case for Very Long Passwords

Now only the english string is changed, as translations are handled via https://www.transifex.com/piwik/piwik/