Fix EZP-21054: Anchor tag is not transformed by xsl

[dpobel]

JIRA issue: https://jira.ez.no/browse/EZP-21054

Description

the anchor tag is not handled by our XSLT stylesheets. As a result, when a XmlText field contains an anchor element, it is rendered without any transformation, and of course this is not valid in HTML5.

While at it, I also added unit tests for the Html5 converter.

Tests

manual tests + unit tests

[bdunogier]

Nice, +1.

[ezrobot]

This Pull Request does not respect our Coding Standards, please, see the report below:

FILE: ...rkspace/eZ/Publish/Core/FieldType/Tests/XmlText/Converter/Html5Test.php
--------------------------------------------------------------------------------
FOUND 4 ERROR(S) AFFECTING 4 LINE(S)
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  29 | ERROR | Whitespace found at end of line
  54 | ERROR | File must not contain multiple empty lines in a row; found 2
     |       | empty lines
 129 | ERROR | Multi-line function call not indented correctly; expected 12
     |       | spaces but found 8
 130 | ERROR | Closing parenthesis of array declaration must be on a new line
--------------------------------------------------------------------------------

[masev]

Thanks, +1 !

[dpobel]

(CS fixed, hopefully...)

[lolautruche]

CS: empty line

[lolautruche]

+1, but maybe squash the commits :)

[andrerom]

+1

[dpobel]

https://travis-ci.org/ezsystems/ezpublish-kernel/jobs/9262577#L266
one of the unit tests is failing in PHP 5.3.3 because before 5.3.6 DomDocument::saveHTML() does not accept any parameter, I'll have to add a workaround for this.

[pspanja]

@dpobel maybe a simple stylesheet would be a good solution there, something in the like of http://git.io/yG-LXQ.

Otherwise +1.

[dpobel]

I tried to fix the unit test in PHP 5.3.3, I'm waiting for a green light from Travis to merge this one.

[dpobel]

manually merged in 238d930, 36ef7a9, 91e5c67 and ba96ddc