ListWidget: Remove usage of $this->mFormat (not taken into account anymore by parent class)

[kghbln]

This PR is made in reference to: #449

This PR addresses or contains:

• Remove internal interface mFormat that does not exist anymore

This PR includes:

• Update of RELEASE-NOTES.md
• Tests (unit/integration)
• CI build passed

Fixes #449

[kghbln]

This is supposed to test as rendered, i.e. with user interaction. I do not know how to test e.g. the "menu" widget with user interaction but probably this is not utmost necessary as long as "alphabet" and "pagination" work.

[mwjames]

You can only test the "raw" output of PHP not something JS creates after it has received the output because we cannot (or as easy as with PHP) test results from JS formats directly (you would need a headless browser and webdriver ... and so on).

==== (actual) ====
<div class="srf-listwidget" data-listtype="ul" data-widget="alphabet" data-pageitems="5"><div class="srf-spinner mw-small-spinner"><span class="srf-processing-text">Chargement...</span></div><div id="listwidget-4" class="listwidget-container" style="display:none; position: relative; margin-bottom:5px; margin-top:5px;"><ul class="smw-format ul-format"><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2000" title="May 2000">May 2000</a></span></span></li><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2001" title="May 2001">May 2001</a></span></span></li><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2002" title="May 2002">May 2002</a></span></span></li><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2003" title="May 2003">May 2003</a></span></span></li><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2004" title="May 2004">May 2004</a></span></span></li><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2005" title="May 2005">May 2005</a></span></span></li><li class="smw-row"><span class="smw-field"><span class="smw-value"><a href="/TravisWiki/index.php/May_2006" title="May 2006">May 2006</a></span></span></li></ul></div></div>
==== (expected) ====
[ <a class="_ ln-disabled" href="#">0-9</a> ], [ <a class="m ln-selected" href="#">M</a> ], [ <ul class="alphabet-container" id="listwidget-6"> ], [ <li class="smw-row ln-m" style=""><span class="smw-field"><span class="smw-value"><a href="/May 2006" data-hasqtip="7" oldtitle="May 2006" title="">May 2006</a></span></span></li> ]
Failed asserting that 0 matches expected 4.

[s7eph4n]

@kghbln, if you don't mind, I will push a version, that should not require sep to be set.

[s7eph4n]

Fixed the format and the test. The test now only checks that the PHP part on the server produces the html structure that is expected by the JS on the client.

[kghbln]

Wow, this is really cool. Thank you a lot for your help. I am very grateful for this.

[mwjames]

@kghbln In case you confirmed that this is working as expected, feel free to merge!

[kghbln]

In case you confirmed that this is working as expected, feel free to merge!

Affirmative, the field tests work cool as expected.

[kghbln]

Back-ported with 14e04f1