[TYPO3-core] FYI6: Fix bug #12830: Wrong encoding of JSON data in t3lib_PageRenderer

[Oliver Hader]

This is an SVN patch request that will be committed to SVN after 6
hours if nobody objects.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=12830

Branch: Trunk

Problem:
JSON data that is used and arranged with PHP's json_encode() in
t3lib_PageRenderer is wrong when it containts special characters on a
non-UTF-8 environment.

Solution:
Convert the labels to UTF-8 again before running json_encode() on the array.

Notes:
Thanks to Steffen Kamper for providing an initial patch for this issue.

olly
-- 
Oliver Hader
TYPO3 Release Manager 4.3
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